The simple past tense of fly is flew. Flown is the past participle, so it must normally follow an auxiliary verb such as has, have, or had, as in “She flew yesterday” and “She has flown before.” The complete irregular-verb sequence is fly, flew, flown.
Key Facts at a Glance
Fly is the base form: “Birds fly south.”
Flew is the simple past: “The bird flew south yesterday.”
Flown is the past participle: “The bird has flown south.”
Use flew without a helping verb for a completed past event.
Use flown after has, have, or had in perfect tenses.
Use flown after forms of be when the sentence is passive: “The kite was flown.”
What Is the Past Tense of Fly?
The past tense of fly is flew, not flown. English uses flew for a finished action in the past, whether the subject is I, you, he, she, we, or they.
Examples include “I flew to Chicago last Friday,” “The eagle flew over the canyon,” and “They flew home after the conference.” The past-tense form does not change with the subject, so English does not use flies or fly in those completed-past sentences.
| Verb form | Grammatical name | Example | Main function |
|---|---|---|---|
| fly | Base form | “Planes fly daily.” | Present tense, infinitive, commands |
| flies | Third-person singular present | “The bird flies high.” | Present tense with he, she, or it |
| flew | Simple past | “The bird flew away.” | Completed past action |
| flown | Past participle | “The bird has flown away.” | Perfect tenses and passive voice |
| flying | Present participle or gerund | “The bird is flying.” | Progressive forms and noun-like use |
The difference is grammatical, not a difference in the kind of flight. A plane flew across the country, and a plane has flown across the country. The verb form changes because the tense or construction changes.
When Should You Use Flew?
Use flew when the sentence describes a completed action in the past without a perfect-tense auxiliary. The usual structure is subject + flew + complement, as in “The pilot flew the aircraft through heavy rain.”
Simple past often appears with a finished time expression. Common signals include yesterday, last week, in 2019, two hours ago, and when I was a child. However, a time expression is not required: “The paper flew out of my hand” is still simple past.
Examples of Flew in the Simple Past
- “The swallows flew south in October.”
- “Maya flew from Boston to Denver.”
- “A loose receipt flew across the room.”
- “The spacecraft flew past the moon in the simulation.”
- “We flew home after the storm ended.”
The simple past can also describe a sequence of completed events: “The pilot checked the controls, flew north, and landed safely.” Each main verb refers to an event in the same past narrative.
A common practitioner rule is simple: if flew can stand as the main verb by itself, it is probably the correct choice. “He flew yesterday” is complete. “He flown yesterday” is not standard English because flown needs grammatical support.
When Should You Use Flown?
Use flown as the past participle after an auxiliary verb. The most common auxiliaries are has, have, and had for perfect tenses, plus forms of be for passive constructions.
The structure determines the meaning:
| Construction | Formula | Example | Meaning |
|---|---|---|---|
| Present perfect | has/have + flown | “She has flown to Rome.” | Past experience or relevant result |
| Past perfect | had + flown | “She had flown before.” | Earlier than another past event |
| Future perfect | will have + flown | “She will have flown 20 hours.” | Completed by a future point |
| Passive perfect | has/have been + flown | “The route has been flown.” | Action received by the subject |
| Simple passive | was/were + flown | “The flag was flown.” | Subject received the action |
“Flown” does not automatically mean that the action is continuing. In “He has flown to Madrid,” the trip may be finished. The present perfect connects that past event to the present, perhaps as experience, achievement, or current relevance.
Why Does Flown Need an Auxiliary?
Flown is a non-finite participle form, so standard English normally cannot use it alone as the main verb of an active past-tense clause. An auxiliary carries tense or grammatical information, while flown completes the verb phrase.
Compare these sentences:
- Incorrect: “I flown to Seattle last year.”
- Correct: “I flew to Seattle last year.”
- Correct: “I have flown to Seattle.”
- Correct: “I had flown to Seattle before the airline changed its route.”
The sentence “The bird is flown” can be grammatical, but it is passive or adjectival rather than an ordinary active equivalent of “The bird flew.” Context determines whether flown describes an action received by the subject or a state associated with something that has been carried through the air.
What Is the Difference Between Flew and Flown?
Flew is a finite simple-past verb, while flown is a past participle used with an auxiliary. The fastest reliable test is to inspect the words before the blank: a finished past action usually takes flew, while has, have, had, or passive be forms usually take flown.
| Sentence pattern | Correct form | Example | Why |
|---|---|---|---|
| Subject + ___ + past time | flew | “They flew yesterday.” | Simple past |
| Subject + has/have + ___ | flown | “They have flown before.” | Present perfect |
| Subject + had + ___ | flown | “They had flown earlier.” | Past perfect |
| Subject + was/were + ___ | flown | “The banner was flown.” | Passive voice |
| Did + subject + ___? | fly | “Did they fly?” | Did carries past tense |
| Will + subject + ___ | fly | “They will fly tomorrow.” | Will takes the base form |
The auxiliary test is useful, but it needs one refinement. After did, use the base form fly, not flew or flown: “Did the plane fly over the city?” The past marker is already expressed by did.
Is the Correct Form Have Flew or Have Flown?
The correct form is have flown, not have flew. The auxiliary have requires the past participle in the present perfect: “We have flown this route five times.”
The same rule applies to has and had:
- “She has flown to Japan.”
- “They have flown in small aircraft.”
- “He had flown for six hours before landing.”
- “Have you ever flown alone?”
“Have flew” is a common error because flew already sounds past-tense. English does not combine the auxiliary have with the simple past in this construction. The pattern is have + past participle, just as in have eaten, have written, and have gone.
Present Perfect Versus Simple Past
Use the simple past when the past time is finished or specified. Use the present perfect when the exact past time is unstated or when the event has present relevance.
| Intended meaning | Correct sentence | Time reference |
|---|---|---|
| One finished trip | “I flew to Lisbon in 2022.” | Specific finished time |
| Life experience | “I have flown to Lisbon.” | Unspecified time |
| Repeated experience to now | “She has flown six times this year.” | Current time period |
| Current result | “The pilot has flown the aircraft to safety.” | Present consequence |
| Past narrative | “We flew home after dinner.” | Completed story event |
In standard edited English, avoid pairing present perfect with a finished-time marker such as yesterday or last year. “I have flown to New York last year” is generally replaced by “I flew to New York last year.” Some varieties and informal speakers use the combination, but formal writing normally maintains the distinction.
Is the Correct Form Had Flew or Had Flown?
The correct form is had flown, not had flew. Past perfect uses had + past participle to place one completed event before another past event.
For example, “The pilot had flown for ten hours before the plane landed” contains two past actions. The flying came first, and the landing came later. The word had marks the earlier event, while flown supplies the participle.
More examples:
- “By noon, the birds had flown beyond the valley.”
- “She had flown only once before the training course.”
- “The crew had flown the aircraft for three months when the inspection occurred.”
Past perfect is not required every time two actions happened in the past. “The pilot flew for ten hours and landed” is clear because the order follows the sentence. Use had flown when the earlier timing needs emphasis or could otherwise be misunderstood.
How Do You Use Flown in the Passive Voice?
Use flown in passive voice when the subject receives the action, as in “The national flag was flown at half-mast.” The standard passive structure is a form of be + flown, sometimes with another auxiliary such as has been or will be.
The active and passive versions shift the sentence focus:
- Active: “The child flew the kite.”
- Passive: “The kite was flown by the child.”
- Active: “The crew has flown the aircraft.”
- Passive: “The aircraft has been flown by the crew.”
Passive voice is especially natural when the object matters more than the person performing the action. “The route has been flown safely for decades” focuses on the route, not on individual pilots.
| Active sentence | Passive sentence | Focus |
|---|---|---|
| “The pilot flew the plane.” | “The plane was flown by the pilot.” | Aircraft in passive |
| “Volunteers flew the flag.” | “The flag was flown by volunteers.” | Flag in passive |
| “The airline has flown the route.” | “The route has been flown by the airline.” | Route in passive |
| “The crew will fly the aircraft.” | “The aircraft will be flown by the crew.” | Aircraft in passive |
Do not confuse passive was flown with simple past flew. “The plane flew over us” means the plane moved through the air. “The plane was flown by Chen” identifies the plane as the object controlled by Chen.
Is Flied Ever Correct?
Flied is generally incorrect as the ordinary past tense of fly, but it is a specialized baseball term in expressions such as “The batter flied out to center field.” For air travel, bird movement, and objects moving through the air, use flew.
Baseball uses fly as a noun for a ball hit into the air. Sports writing can therefore use flied as a regularized past form of that technical verb:
- “The batter flied out in the seventh inning.”
- “He flied to left field for the second out.”
Many baseball style guides and dictionaries recognize this sports usage. It does not replace flew in general English. Write “The bird flew over the stadium,” not “The bird flied over the stadium.”
A second specialized use appears in some technical or industry contexts, but ordinary learners should follow the broad rule: flew for general past movement, flied only when a recognized domain convention requires it.
How Do Questions and Negatives Work With Fly?
Questions and negatives that use did take the base form fly, not flew or flown. The auxiliary did carries the past tense, so the main verb returns to its dictionary form.
Correct examples include:
- “Did you fly to Toronto?”
- “Why did the bird fly away?”
- “We did not fly because of the weather.”
- “She didn’t fly last weekend.”
The same principle applies to other auxiliaries:
- “Have you flown before?”
- “Has the plane flown over the mountains?”
- “Had they flown that route previously?”
- “The plane has not flown today.”
| Meaning | Correct form | Incorrect form |
|---|---|---|
| Past question | “Did you fly?” | “Did you flew?” |
| Past negative | “I did not fly.” | “I did not flew.” |
| Present-perfect question | “Have you flown?” | “Have you flew?” |
| Present-perfect negative | “I have not flown.” | “I have not flew.” |
| Simple past statement | “I flew.” | “I flied.” |
The most frequent learner error is carrying the past form into a clause where an auxiliary already expresses tense. Check the first verb in the verb phrase before choosing the form that follows it.
Does Fly Have Different Meanings?
Fly can describe winged movement, air travel, rapid movement, flag display, and baseball contact. The past forms remain flew and flown across most meanings, although baseball can use the specialized form flied.
Examples by meaning:
| Meaning of fly | Simple past example | Past participle example |
|---|---|---|
| Bird movement | “The hawk flew east.” | “The hawk has flown away.” |
| Aircraft travel | “We flew to Madrid.” | “We have flown that airline.” |
| Rapid movement | “The papers flew off the desk.” | “The papers had flown everywhere.” |
| Flag display | “The flag flew above the building.” | “The flag was flown at dawn.” |
| Time passing | “The summer flew by.” | “The weeks have flown by.” |
| Baseball | “The batter flied out.” | “The batter has flied out twice.” |
The phrase time flew is an idiom meaning that time passed quickly. Its perfect equivalent is time has flown, as in “The semester has flown by.” In both cases, the grammatical distinction remains unchanged.
What About Phrasal Verbs?
Phrasal verbs built with fly normally retain flew for simple past and flown for participial constructions. The particle does not change the irregular pattern.
- “The bird flew away.”
- “The bird has flown away.”
- “The children flew into a panic.”
- “The rumor had flown around the office.”
- “The deadline flew by.”
- “The deadline has flown by.”
Some expressions have specialized meanings. “Fly off the handle” means to become suddenly angry, so “He flew off the handle” is correct. “Fly by” can mean pass quickly, as in “The afternoon flew by,” while “has flown by” uses the participle.
How Do You Remember Flew Versus Flown?
Remember the compact contrast “I flew, but I have flown.” The first clause uses simple past; the second uses have plus the past participle. This mnemonic is more useful than memorizing isolated definitions because it stores the auxiliary pattern with the verb form.
A related irregular-verb family can reinforce the vowel change:
| Base form | Simple past | Past participle |
|---|---|---|
| blow | blew | blown |
| fly | flew | flown |
| grow | grew | grown |
| know | knew | known |
| throw | threw | thrown |
The pattern is not perfectly predictable across English, so the group is a memory aid rather than a universal rule. For accurate writing, identify the auxiliary first, then select the form.
A practical editing routine takes less than one minute:
- Circle the verb phrase.
- Identify whether the sentence refers to simple past, perfect aspect, or passive voice.
- Use flew for a standalone completed past action.
- Use flown after has, have, had, or passive be.
- Use fly after did, will, can, should, or another modal.
What Are the Most Common Mistakes?
The most common mistakes involve confusing a tense form with a participle form. Each error has a predictable correction.
| Common error | Correct version | Rule |
|---|---|---|
| “I flown yesterday.” | “I flew yesterday.” | Simple past needs flew |
| “She has flew home.” | “She has flown home.” | Has takes the participle |
| “Did they flew?” | “Did they fly?” | Did takes the base form |
| “The bird flied south.” | “The bird flew south.” | General English uses flew |
| “He had flew before.” | “He had flown before.” | Had takes the participle |
| “The kite was flew.” | “The kite was flown.” | Passive voice takes the participle |
One counterintuitive point matters: a past-time meaning does not always require the simple-past form. “She has flown” refers to a past event, but the construction is present perfect, so flown is correct. Tense and time reference overlap, but they are not identical categories.
Another frequent problem is treating was as a universal signal for flew. “The plane was flying” uses the progressive form, while “The plane was flown by the student” uses passive flown. The verb after was depends on the construction, not on the word was alone.
Flew or Flown: Which One Should You Choose?
Choose flew for a completed past statement, flown after a perfect-tense auxiliary or in passive voice, and fly after did or a modal. The following decision table resolves most sentences immediately.
| If the sentence contains | Choose | Example |
|---|---|---|
| A finished past event | flew | “The plane flew yesterday.” |
| has or have | flown | “The plane has flown today.” |
| had | flown | “The plane had flown earlier.” |
| was/were/been in passive voice | flown | “The plane was flown by Lee.” |
| did | fly | “Did the plane fly?” |
| A modal such as can or will | fly | “The plane will fly tomorrow.” |
| Progressive is/was | flying | “The plane was flying north.” |
The one factor that most often determines the answer is the auxiliary, not whether the event happened in the past. Ask what role the verb phrase plays, then check whether another verb already carries tense.
Can You Say “The Plane Has Flew”?
No. Standard English requires “The plane has flown.” The auxiliary has combines with the past participle flown, whereas flew is the simple past and cannot normally follow has.
Can You Say “I Have Flew”?
No. Say “I have flown.” Say “I flew” when naming a completed event, such as “I flew to Paris last June.”
Can You Say “The Plane Was Flew”?
No. Use “The plane was flown” for passive voice, or “The plane was flying” for an ongoing action. “The plane flew” is the simple-past active form.
FAQ
Is “flown” a past tense word?
Flown is the past participle of fly, not the simple past tense. English uses flown with auxiliaries in forms such as “has flown,” “have flown,” and “had flown,” while the standalone simple past is “flew.”
What is the third form of fly?
The third principal part of fly is flown. The standard three-form sequence is fly, flew, flown: base form, simple past, and past participle.
Which is correct, “I flew” or “I have flown”?
Both are correct in different contexts. Use “I flew” for a completed event at a specified past time, such as “I flew last Tuesday.” Use “I have flown” for past experience or an event connected to the present.
Is “flew” present or past tense?
Flew is the simple past tense of fly. The present forms are fly for most subjects and flies for third-person singular subjects, as in “Birds fly” and “A bird flies.”
What is the past continuous of fly?
The past continuous is was or were flying. Examples are “The bird was flying over the lake” and “The birds were flying south.” The form uses the present participle flying, not flew or flown.
What is the past tense of fly in baseball?
In general English, the past tense is flew. Baseball may use flied in the technical expression “flied out,” as in “The batter flied out to right field.” Use flew for aircraft, birds, and ordinary movement.
The Bottom Line
The answer to “what’s the past tense of fly, flew or flown?” is flew. Use flown only as the past participle after auxiliaries such as has, have, or had, or in passive constructions such as “was flown.” The complete pattern is fly, flew, flown: “I fly,” “I flew,” and “I have flown.”
