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$439+ Cheap flights from Irvine, CA to Busan (PUS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — PUS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Irvine to Busan Gimhae are usually found in October or September, booked 44 days in advance, depart on a Wednesday or Monday and return on a Monday

Cheap flight deals from Irvine to Busan

Keep the following information in mind while searching for Irvine to Busan flight deals. Data was last updated June 12, 2025.

Round-trip from

$787
(Gurufare)

One-way from

$439
(FlightHub)

Popular in

July

Cheapest in

October

Average price

$1,635
From Irvine to Busan Gimhae
Search Deals
One-way flight from Irvine to Busan Gimhae
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($231 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($63 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Irvine to Busan

Cheapest flights from Irvine to Busan
Explore the most affordable flight options available from Irvine to Busan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/109:00 pmLAX - PUS
1 stop21h 45mAir China
Thu 11/2712:45 pmPUS - LAX
1 stop23h 15mAir China
Deal found 6/11$774
This Gurufare deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/312:30 pmLAX - PUS
1 stop31h 05mChina Eastern
Sat 9/135:50 pmPUS - LAX
1 stop32h 15mChina Eastern
Deal found 6/11$787
This oojo deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/212:25 amLAX - PUS
1 stop21h 10mCathay Pacific
Sat 9/137:45 amPUS - LAX
1 stop19h 35mCathay Pacific
Deal found 6/11$837
This Booking.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/109:00 pmLAX - PUS
2 stops26h 05mMultiple Airlines
Thu 11/2712:45 pmPUS - LAX
1 stop23h 15mMultiple Airlines
Deal found 6/11$934
This oojo deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/212:55 amLAX - PUS
1 stop18h 20mChina Airlines
Sat 9/138:00 pmPUS - LAX
1 stop17h 35mChina Airlines
Deal found 6/9$943
This oojo deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/311:00 pmLAX - PUS
2 stops30h 05mAsiana Airlines
Sat 9/1310:00 amPUS - LAX
2 stops46h 00mAsiana Airlines
Deal found 6/11$1,175
This Ovago deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/212:55 amLAX - PUS
2 stops38h 55mVietnam Airlines
Sat 9/1310:00 amPUS - LAX
2 stops27h 35mVietnam Airlines
Deal found 6/11$1,410
This Trip.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/2611:55 pmLAX - PUS
1 stop27h 55mPhilippine Airlines
Sat 8/29:00 pmPUS - LAX
1 stop28h 45mPhilippine Airlines
Deal found 6/11$1,440
This oojo deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2412:30 pmLAX - PUS
1 stop16h 15mKorean Air
Tue 7/1510:40 amPUS - LAX
2 stops22h 18mKorean Air
Deal found 6/11$1,943
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/27:00 amLAX - PUS
2 stops32h 45mDelta
Mon 7/218:05 amPUS - LAX
1 stop18h 05mDelta
Deal found 6/12$2,019

Cheapflights Fare Finder

Customize your flight search to find flights from Irvine to Busan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Irvine to Busan that are best for you.

Fly from

Irvine

Fly to

Busan

Route

Depart

Return

Price

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Wed 9/3

12:30 pm-11:35 am

1 stop31h 05m

Busan Gimhae

Sat 9/13

5:50 pm-10:05 am

1 stop32h 15m

$787

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Tue 9/2

12:25 am-1:35 pm

1 stop21h 10m

Busan Gimhae

Sat 9/13

7:45 am-11:20 am

1 stop19h 35m

$837

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Tue 9/2

12:55 am-11:15 am

1 stop18h 20m

Busan Gimhae

Sat 9/13

8:00 pm-9:35 pm

1 stop17h 35m

$943

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Mon 7/7

10:50 am-7:15 pm

1 stop16h 25m

Busan Gimhae

Thu 7/17

7:45 am-8:50 am

1 stop17h 05m

$1,048

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Wed 9/3

11:00 pm-9:05 pm

2 stops30h 05m

Busan Gimhae

Sat 9/13

10:00 am-4:00 pm

2 stops46h 00m

$1,175

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Tue 9/2

12:55 am-7:50 am

2 stops38h 55m

Busan Gimhae

Sat 9/13

10:00 am-9:35 pm

2 stops27h 35m

$1,410

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Sat 7/26

11:55 pm-7:50 pm

1 stop27h 55m

Busan Gimhae

Sat 8/2

9:00 pm-9:45 am

1 stop28h 45m

$1,440

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Tue 6/24

12:30 pm-8:45 pm

1 stop16h 15m

Busan Gimhae

Tue 7/15

10:40 am-4:58 pm

2 stops22h 18m

$1,943

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Wed 7/2

7:00 am-8:45 pm

2 stops21h 45m

Busan Gimhae

Mon 7/21

10:40 am-10:10 am

1 stop15h 30m

$2,019

Los AngelesBusan

LAX - PUS

LAXPUS

Los Angeles

Sun 7/6

12:30 pm-4:50 pm

1 stop36h 20m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 16 results
1
2

Best time to book a flight from Irvine to Busan

Have a flexible travel schedule? Discover the best time to fly to Busan from Irvine with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Irvine to Busan

How far ahead should I book a flight from Irvine to Busan?

Use this chart to determine the optimal time to book a round-trip flight from Irvine to Busan. Price data was last updated on June 9, 2025.

The best time to book flights from Irvine to Busan is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Irvine to Busan?

Currently, August is the cheapest month in which you can book a flight from Irvine to Busan (average of $1,166). Flying from Irvine to Busan in December is currently the most expensive (average of $2,247). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IR9 to PUS?

Find hourly flight availability from Irvine to Busan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from Irvine to Busan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Busan by month

Plan your trip to Busan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Busan ranges from 0.9 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. December is typically the driest time to visit Busan when rainfall is around 0.9 in.

Temperature in Busan by month

Plan your trip to Busan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Busan, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Busan

Get insights into the airlines that provide service to Busan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Busan. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Korean Air, China Airlines and Asiana Airlines from Irvine to Busan to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,088 reviews

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Boarding

8.5

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,088 reviews
Korean Air
8.4
Very good
1,088 reviews

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Boarding

8.5

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.3
Very good
738 reviews
Korean Air
8.4
Very good
1,088 reviews

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Boarding

8.5

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Asiana Airlines
8.2
Very good
440 reviews
Korean Air
8.4
Very good
1,088 reviews

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Boarding

8.5

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very good
1,302 reviews
Korean Air
8.4
Very good
1,088 reviews

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Boarding

8.5

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,950 reviews
Korean Air
8.4
Very good
1,088 reviews

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Boarding

8.5

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Irvine to Busan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Busan from Irvine?

    Busan Gimhae (PUS), located 7.2 mi from the city center, is the airport you fly into when you book flights from Irvine to Busan. 6 airlines have flights to Gimhae from Irvine on a regular basis. Booking flights from Irvine to Busan Gimhae should not be difficult; the airport handles an average of 0 inbound flights from Irvine per day.

  • What are the cheapest airlines to fly from Irvine to Busan one-way?

    $439 is the cheapest one-way deal found within the past few days, from China Eastern. You may also be able to find cheap deals on Cathay Pacific and China Airlines, with prices starting from $539 and $561, respectively.

  • Can I find deals for flights from Irvine to Busan that include hotel bookings?

    Yes. In addition to deals on Irvine to Busan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Irvine to Busan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Irvine to Busan.

  • Can I find deals for business class flights from Irvine to Busan?

    Yes. Cheapflights offers flight deals from Irvine to Busan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Irvine to Busan?

    Currently, August is the cheapest month in which you can book a flight from Irvine to Busan (average of $1,166). Flying from Irvine to Busan in December is currently the most expensive (average of $2,247). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 6 airlines flying from Irvine to Busan

Discover the top 6 airlines that operate flights from Irvine to Busan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest$640Average$779FlexibilityNo cancel feeOn-time62%
Air ChinaCheapest$680Average$780FlexibilityNo cancel feeOn-time67%
Cathay PacificCheapest$740Average$889FlexibilityNo cancel feeOn-time72%
China AirlinesCheapest$937Average$1,097FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$1,175Average$1,452FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,284Average$1,467FlexibilityNo cancel feeOn-timeN/A

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