Time has flew by or time has flown by is a common grammar question among English learners. These two phrases look very similar, but only one is grammatically correct in standard English. Because the verbs flew and flown both come from the verb fly, many people accidentally use the wrong one in conversation and writing. Understanding the difference will help you speak and write more naturally and avoid a common grammar mistake. In this guide, you’ll learn the meanings of both expressions, why people confuse them, how to remember the correct form, and when to use each one with plenty of simple examples.
Why “Time Has Flew By” and “Time Has Flown By” Are Confusing
Many English learners struggle with these phrases because flew and flown are different forms of the same irregular verb.
Here are the main reasons for the confusion.
Similar Pronunciation
Both words begin with the same sound and are pronounced similarly. In fast speech, they can sound almost identical.
Similar Spelling
The only spelling difference is -ew versus -own, making it easy to mix them up.
Context Confusion
Both phrases describe time passing quickly. Since they express the same idea, learners often assume either form is acceptable.
Common Learner Mistakes
Many people remember that flew is the past tense of fly, but they forget that after has, have, or had, English requires the past participle, which is flown, not flew.
Time Has Flew By vs Time Has Flown By Explained Simply
The difference is based on grammar.
“Time has flown by” is correct because “has” must be followed by the past participle “flown.”
“Time has flew by” is incorrect because “flew” is the simple past tense, not the past participle.
One-Line Distinction
“Time has flown by” is grammatically correct, while “time has flew by” is grammatically incorrect.
Example Sentences
- Time has flown by since we graduated.
- I can’t believe how quickly time has flown by.
Understanding Homophones in English
What Are Homophones?
Homophones are words that sound the same but have different meanings or spellings.
Example:
- Flower
- Flour
Although they sound alike, they mean different things.
Why Homophones Cause Confusion
English contains many words that sound alike or nearly alike. Learners often rely on pronunciation instead of grammar.
For example:
- Their
- There
- They’re
These words sound similar but have different meanings and uses.
Similarly, flew and flown belong to the same verb family, making them easy to confuse.
What Does “Time Has Flew By” Mean?
Although many people say or write time has flew by, it is not considered correct Standard English.
Definition and Core Meaning
People who use this phrase usually mean:
Time passed very quickly.
However, the grammar is incorrect.
Origin and Historical Use
The mistake comes from confusing two forms of the irregular verb fly.
Verb forms:
- Fly
- Flew
- Flown
The phrase became common because learners incorrectly substitute flew for flown after the helping verb has.
Modern Usage and Synonyms
Since the phrase is grammatically incorrect, it should be avoided in formal and informal writing.
Instead, use:
- Time has passed quickly.
- Time has flown by.
- Time went by quickly.
- The years have passed so fast.
Key Points
- ❌ Not standard English
- ❌ Uses the wrong verb form
- ❌ Common learner mistake
- ❌ Should be replaced with time has flown by
Example Sentences
Incorrect:
- Time has flew by since our vacation.
- Wow, time has flew by so fast.
Corrected:
- Time has flown by since our vacation.
- Wow, time has flown by so fast.
What Does “Time Has Flown By” Mean?
This is the correct English expression.
Definition and Core Meaning
Time has flown by means:
Time has passed very quickly.
It often expresses surprise at how fast days, months, or years have gone.
Origin and Historical Context
The expression comes from comparing time to a bird flying rapidly through the sky.
The verb forms are:
- Fly
- Flew
- Flown
After has, English grammar requires flown.
Modern Usage and Synonyms
Common alternatives include:
- Time has passed quickly.
- The years have gone by quickly.
- Time slipped away.
- Time raced by.
- Time went by fast.
Key Points
- ✔ Grammatically correct
- ✔ Common in spoken and written English
- ✔ Uses the present perfect tense
- ✔ Appropriate in formal and informal situations
Example Sentences
- Time has flown by since I started college.
- I can’t believe time has flown by already.
- The summer has flown by.
- Ten years have flown by so quickly.
Time Has Flew By vs Time Has Flown By: Key Differences at a Glance
| Word/Phrase | Part of Speech | Meaning | Example Context |
|---|---|---|---|
| Time has flew by | Incorrect verb phrase | Grammatically incorrect | ❌ Time has flew by this year. |
| Time has flown by | Present perfect verb phrase | Time has passed very quickly | ✔ Time has flown by since January. |
How to Remember the Difference Between Time Has Flew By and Time Has Flown By
Here are some simple memory tricks.
Easy Memory Tricks
Remember this pattern:
- Fly
- Flew
- Flown
If you use:
- has
- have
- had
Always choose flown.
Association Technique
Think:
Has = Has Flown
Both words contain the letter o.
This visual connection can help you remember the correct form.
Memorable Example
✔ The bird has flown away.
✔ Time has flown by.
If “bird has flown” sounds correct, then “time has flown by” follows the same grammar rule.
Common Mistakes and Confusions
Wrong
Time has flew by.
Correct
Time has flown by.
Explanation: Present perfect requires the past participle.
Wrong
The years have flew by.
Correct
The years have flown by.
Explanation: “Have” must be followed by “flown.”
Wrong
Life has flew by quickly.
Correct
Life has flown by quickly.
Explanation: Use the past participle after “has.”
Examples Section: Correct and Incorrect Usage
✔ Correct:
Time has flown by since we met.
✘ Incorrect:
Time has flew by since we met.
✔ Correct:
Summer has flown by so quickly.
✘ Incorrect:
Summer has flew by so quickly.
✔ Correct:
The last decade has flown by.
✘ Incorrect:
The last decade has flew by.
✔ Correct:
Our vacation has flown by.
✘ Incorrect:
Our vacation has flew by.
Self Assessment: Test Your Knowledge
Fill in the blanks.
1. Time has ________ by since graduation.
a) flew
b) flown
2. The weekend has ________ by.
a) flown
b) flew
3. Which sentence is correct?
a) Time has flew by.
b) Time has flown by.
4. The years have ________ by faster than expected.
a) flown
b) flew
Self Assessment Answers
- flown
- flown
- Time has flown by.
- flown
FAQs About “Time Has Flew By” and “Time Has Flown By”
1. Is “time has flew by” grammatically correct?
No. It is grammatically incorrect because flew is the simple past tense.
2. Which phrase should I use?
Always use time has flown by after has, have, or had.
3. Why is “flown” correct?
Because it is the past participle of the verb fly, which is required in the present perfect tense.
4. Can native English speakers make this mistake?
Yes. Although less common, even native speakers sometimes confuse irregular verb forms in casual writing.
5. Is “time flew by” correct?
Yes. Time flew by is correct because it uses the simple past tense without the helping verb has.
6. What is the verb pattern for “fly”?
The correct forms are:
- Fly
- Flew
- Flown
7. How can I avoid this mistake?
Memorize irregular verb forms and remember that has, have, and had are always followed by the past participle.
Final Conclusion: Using “Time Has Flew By” and “Time Has Flown By” Correctly
Learning the difference between time has flew by and time has flown by is an excellent step toward mastering English grammar. Although both phrases aim to express the same idea—that time passes very quickly—only time has flown by is grammatically correct. This is because the verb fly is irregular, and after helping verbs such as has, have, or had, English requires the past participle flown, not the simple past tense flew. Keeping the verb pattern fly–flew–flown in mind will help you avoid this common mistake.
In everyday conversations, books, emails, and professional writing, you’ll frequently see and hear time has flown by. It’s a natural and widely accepted expression used to reflect on how quickly days, months, or even years have passed. Whenever you’re unsure, remember the simple rule: if you use has, have, or had, choose flown. If you’re talking about a completed event in the past without a helping verb, use flew, as in time flew by.
With regular practice, reading, and listening to authentic English, these verb forms will become second nature. Every grammar mistake you understand today becomes a strength tomorrow. Keep learning, pay attention to irregular verbs, and you’ll soon use expressions like time has flown by confidently and correctly in both speaking and writing.
David Parker is a language researcher and content writer at WordClarity.com, specializing in English word meanings, comparisons, spelling differences, and usage guides. He creates easy-to-understand content that helps readers improve clarity and confidence in everyday English. His work focuses on making language learning simple, accurate, and practical.