Time Has Flown By or Time Has Flew By? ✨ The Correct Grammar Explained
Time Has Flown By or Time Has Flew By is a common English grammar confusion that many learners and even native speakers struggle with. Have you ever looked back at old photos, remembered your school days, or noticed that a whole year disappeared in what felt like just a few weeks? You probably said something like, “Wow, time has flown by!” ⏰
But here is where many people pause and wonder: should it be “time has flown by” or “time has flew by”? The two phrases sound similar, and because flew and flown both come from the verb fly, it is easy to confuse them.
This mistake happens often in conversations, social media posts, emails, and even professional writing. Many people use the wrong form simply because English verb tenses can be tricky. 😵
If you have ever searched for this phrase, you are not alone. Thousands of English learners and native speakers ask the same question.
The good news? The rule is simple once you understand how verb forms work.
Quick Answer: Time Has Flown By or Time Has Flew By?

✅ “Time has flown by” is correct.
❌ “Time has flew by” is incorrect.
The reason is simple: after has, English grammar requires a past participle, and flown is the past participle of fly. Flew is only the simple past tense.
Example:
✔ Time has flown by so quickly.
❌ Time has flew by so quickly.
Understanding the Basics: Time Has Flown By or Time Has Flew By
To understand the difference, you first need to know the three main forms of the verb fly.
- Present: fly
- Past: flew
- Past participle: flown
Here is an easy comparison:
| Form | Type | Meaning | Example | Correct/Incorrect |
|---|---|---|---|---|
| Fly | Present tense | Happening now | Birds fly south | ✅ Correct |
| Flew | Past tense | Happened in the past | Time flew by yesterday | ✅ Correct |
| Flown | Past participle | Used with has/have/had | Time has flown by | ✅ Correct |
| Flew after has | Incorrect structure | Wrong tense combination | Time has flew by | ❌ Incorrect |
The confusion exists because people know flew happened in the past, so they naturally think it belongs after has. But English grammar follows a specific pattern.
Has + Past Participle
That means:
- has gone
- has eaten
- has written
- has flown
Not:
- has went
- has ate
- has wrote
- has flew
Correct Meanings & Uses
Understanding “Time Has Flown By” ⏳
The phrase time has flown by means time passed very quickly.
People use it when they are surprised by how fast days, months, or years disappeared.
Examples:
“I cannot believe our vacation is over. Time has flown by.”
Sentence breakdown:
- Time = subject
- has = helping verb
- flown = past participle
- by = indicates passing
Meaning:
The vacation seemed short because it passed quickly.
Another Example
“Ten years have flown by since graduation.”
Breakdown:
- Ten years passed rapidly
- The speaker feels surprised
This phrase often carries emotional meaning. 😊
Test Tip 🎯
If your sentence contains:
- has
- have
- had
Ask yourself:
“Am I using a past participle?”
If not, check the verb.
Understanding Why “Time Has Flew By” Is Wrong
“Time has flew by” sounds natural to some people because flew is a past-tense word.
But grammar requires:
Helping verb + past participle
Correct:
✔ has flown
Wrong:
❌ has flew
Think of these examples:
✔ She has written a book.
❌ She has wrote a book.
✔ We have eaten lunch.
❌ We have ate lunch.
Same rule.
Case Study Section 📘
Imagine an employee writing an email:
Incorrect:
“I cannot believe six months has flew by since joining the company.”
A manager reading this may notice the grammar issue immediately.
Correct version:
“I cannot believe six months has flown by since joining the company.”
Why?
Because has requires flown.
Small grammar errors can affect credibility in professional settings.
Grammar Rules Explanation
English verbs often have three forms:
| Verb | Present | Past | Past Participle |
|---|---|---|---|
| Write | write | wrote | written |
| Eat | eat | ate | eaten |
| Go | go | went | gone |
| Fly | fly | flew | flown |
Grammar authorities like Merriam-Webster explain that flown functions as the past participle of fly, while flew serves as the simple past tense.
Rule:
Has + flown
Not:
Has + flew
Examples:
✔ The years have flown by.
✔ Time had flown by quickly.
❌ Time had flew by quickly.
Common Mistakes 🚫
Why do people make this mistake?
Several reasons:
Fast typing
People type quickly and choose the first form they remember.
Autocorrect
Technology sometimes misses grammar errors.
Lack of grammar knowledge
Many people do not remember past participles.
Similar sounds
Flew and flown are closely related.
Similar Grammar Confusions
| Confusion | Correct | Incorrect |
|---|---|---|
| It’s vs Its | It’s raining | Its raining |
| You’re vs Your | You’re welcome | Your welcome |
| Their vs There | Their house | There house |
| Has gone vs Has went | Has gone | Has went |
| Has flown vs Has flew | Has flown | Has flew |
Patterns repeat throughout English.
Usage in Different Contexts
Everyday Conversation ☕
People frequently say:
“Wow, time has flown by!”
This is natural and common.
Professional Writing 💼
Business emails often use this phrase.
Example:
“The quarter has flown by, and our team achieved excellent results.”
Professional writing needs correct grammar.
Creative Writing ✍️
Authors often use the phrase emotionally:
“Summer had flown by before she noticed the leaves changing colors.”
It creates a feeling of nostalgia.
Social Media and Texting 📱
People post:
“Already Friday? Time has flown by 😂”
Even casual writing should use the correct form.
Why It Matters ⭐
Some people think grammar details are unimportant.
But word choice affects communication.
Clarity
Correct grammar prevents confusion.
Professionalism
Errors can influence how people view your writing.
Writing accuracy
Online communication spreads quickly.
A small mistake can appear careless.
Consider this quote:
“Good grammar is clear thinking made visible.”
Strong writing creates stronger impressions.
Special Exception
There are no major exceptions for time has flown by.
However, you may hear people say:
“Time flew by.”
This is completely correct because flew works without has.
Examples:
✔ Time flew by during vacation.
✔ The weekend flew by.
But:
❌ Time has flew by
The helping verb changes everything.
Quick Recap Checklist ✅
Before choosing between time has flown by or time has flew by, ask these questions:
| Question | If Yes → Use |
|---|---|
| Does the sentence contain has? | flown |
| Does it contain have? | flown |
| Does it contain had? | flown |
| Is it simple past without helping verbs? | flew |
Practice examples:
- The years have ______ by quickly.
Answer: flown
- Last summer ______ by.
Answer: flew
- Time has ______ by.
Answer: flown
FAQs
Is “time has flew by” ever correct?
No. English grammar rules require the past participle after has. The correct phrase is time has flown by.
Why do people say “time has flew by”?
People confuse flew and flown because both come from the verb fly.
Can I say “time flew by”?
Yes. This is correct because flew is the simple past tense.
Example:
“The holiday flew by.”
Is “time has flown by” formal or informal?
It works in both formal and informal writing.
You can use it in:
- emails
- conversations
- books
- presentations
What is the past participle of fly?
The past participle is flown.
Verb pattern:
Fly → Flew → Flown
How can I remember the rule?
Remember this shortcut:
Has + Flown
Never:
Has + Flew
Conclusion
The confusion between Time Has Flown By or Time Has Flew By happens because English verbs often have multiple forms. Since flew is the past tense and flown is the past participle, people accidentally mix them up.
The rule is straightforward: whenever you use has, have, or had, use flown. If you are writing in simple past tense without helping verbs, use flew.
Correct:
✔ Time has flown by.
✔ Time flew by.
Incorrect:
❌ Time has flew by.
Remember this simple formula: helping verb + past participle = flown. Once you learn that pattern, you will never make this mistake again. And the next time someone says “Time has flew by,” you will know exactly why it sounds wrong. 🎉
Also read: Eventhough vs Even Though

Hi, I’m Dexter Rhodes. At gramzio.com, I apply my 10 years of experience in copy-editing to ensure every guide we publish is accurate, professional, and follows the highest editorial standards.