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Gimpo Intl

$728+ Cheap flights from Ontario (ONT) to Gimpo Intl (GMP)

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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — GMP
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap flight deals from Ontario to Gimpo Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Gimpo Intl (GMP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,372
(Japan Airlines)

One-way from

$728
(Mytrip)

Popular in

December

Cheapest in

November

Average price

$990
Provider with most accurate pricing for Ontario-Seoul Gimpo Intl flight deals.
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Provider most trusted by Cheapflights users for Ontario-Seoul Gimpo Intl flights.
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From Ontario to Seoul Gimpo Intl
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One-way flight from Ontario to Seoul Gimpo Intl
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Highest demand for flights based on searches. 1% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Ontario to Gimpo Intl

Cheapest flights from Ontario to Gimpo Intl
Explore the most affordable flight options available from Ontario to Gimpo Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This American Airlines deal was found by Cheapflights users on 10/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/246:10 amONT - GMP
2 stops22h 55mMultiple Airlines
Thu 2/128:00 amGMP - ONT
2 stops22h 44mMultiple Airlines
Deal found 10/25$2,047
This oojo deal was found by Cheapflights users on 10/25. 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.
Mon 11/106:00 amONT - GMP
2 stops23h 05mJapan Airlines
Mon 11/248:00 amGMP - ONT
2 stops24h 54mJapan Airlines
Deal found 10/25$2,054
This American Airlines deal was found by Cheapflights users on 10/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/16:10 amONT - GMP
2 stops22h 55mMultiple Airlines
Mon 12/298:00 amGMP - ONT
2 stops20h 53mMultiple Airlines
Deal found 10/26$2,273
This oojo deal was found by Cheapflights users on 10/26. 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.
Mon 10/276:00 amONT - GMP
2 stops24h 05mJapan Airlines
Fri 11/1412:05 pmGMP - ONT
2 stops20h 12mJapan Airlines
Deal found 10/26$2,424
This Japan Airlines deal was found by Cheapflights users on 10/28. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:00 amONT - GMP
2 stops23h 05mMultiple Airlines
Wed 11/268:00 amGMP - ONT
2 stops23h 02mMultiple Airlines
Deal found 10/28$2,603
This oojo deal was found by Cheapflights users on 10/26. 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.
Fri 12/196:00 amONT - GMP
2 stops35h 55mJapan Airlines
Wed 12/3112:05 pmGMP - ONT
2 stops20h 37mJapan Airlines
Deal found 10/26$3,368
This oojo deal was found by Cheapflights users on 10/27. 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.
Fri 11/216:00 amONT - GMP
2 stops23h 05mJapan Airlines
Mon 12/1512:05 pmGMP - ONT
2 stops23h 28mJapan Airlines
Deal found 10/27$4,876
This Japan Airlines deal was found by Cheapflights users on 10/27. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:00 amONT - GMP
2 stops35h 55mJapan Airlines
Sat 12/1312:05 pmGMP - ONT
2 stops23h 28mJapan Airlines
Deal found 10/27$5,021
This oojo deal was found by Cheapflights users on 10/27. 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.
Fri 11/216:00 amONT - GMP
2 stops23h 05mJapan Airlines
Thu 12/188:00 amGMP - ONT
2 stops24h 42mJapan Airlines
Deal found 10/27$5,119
This Japan Airlines deal was found by Cheapflights users on 10/28. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:00 amONT - GMP
2 stops23h 05mMultiple Airlines
Sat 12/138:00 amGMP - ONT
2 stops20h 54mMultiple Airlines
Deal found 10/28$5,416
This oojo deal was found by Cheapflights users on 10/28. 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.
Fri 11/216:00 amONT - GMP
2 stops23h 05mJapan Airlines
Sun 12/78:00 amGMP - ONT
2 stops27h 33mJapan Airlines
Deal found 10/28$8,036

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Gimpo Intl 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 October 28, 2025.
Use the filters below to find and compare flights from Ontario to Seoul Gimpo Intl Airport that are best for you.

Fly from

Ontario

Fly to

Gimpo Intl

Route

Depart

Return

Price

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Mon 1/12

11:59 pm-10:05 pm

2 stops29h 06m

Seoul Gimpo Intl

Mon 2/9

8:00 am-10:48 pm

2 stops31h 48m

$1,372

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Mon 11/24

6:10 am-10:05 pm

2 stops22h 55m

Seoul Gimpo Intl

Thu 2/12

8:00 am-1:44 pm

2 stops22h 44m

$2,047

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Mon 11/10

6:00 am-10:05 pm

2 stops23h 05m

Seoul Gimpo Intl

Mon 11/24

8:00 am-3:54 pm

2 stops24h 54m

$2,054

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Mon 12/1

6:10 am-10:05 pm

2 stops22h 55m

Seoul Gimpo Intl

Mon 12/29

8:00 am-11:53 am

2 stops20h 53m

$2,273

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Wed 11/19

6:00 am-10:05 pm

2 stops23h 05m

Seoul Gimpo Intl

Wed 11/26

8:00 am-2:02 pm

2 stops23h 02m

$2,603

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Thu 2/12

11:59 pm-10:05 pm

2 stops29h 06m

Seoul Gimpo Intl

Tue 3/3

8:00 am-1:57 pm

2 stops22h 57m

$2,634

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Thu 2/5

11:59 pm-10:05 pm

2 stops29h 06m

Seoul Gimpo Intl

Thu 3/5

8:00 am-1:57 pm

2 stops22h 57m

$2,991

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Fri 12/19

6:00 am-10:55 am

2 stops35h 55m

Seoul Gimpo Intl

Wed 12/31

12:05 pm-3:42 pm

2 stops20h 37m

$3,368

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Fri 11/21

6:00 am-10:05 pm

2 stops23h 05m

Seoul Gimpo Intl

Mon 12/15

12:05 pm-6:33 pm

2 stops23h 28m

$4,876

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Fri 12/5

6:00 am-10:55 am

2 stops35h 55m

Seoul Gimpo Intl

Sat 12/13

12:05 pm-6:33 pm

2 stops23h 28m

$5,021

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/25

Showing 1-10 of 21 results
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Compare providers for flights from Ontario to Gimpo Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Gimpo Intl in October.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Seoul Gimpo Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Seoul Gimpo Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Seoul Gimpo Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Seoul Gimpo Intl Airport flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Seoul Gimpo Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Gimpo Intl

Have a flexible travel schedule? Discover the best time to fly to Gimpo Intl from Ontario 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 Ontario to Seoul Gimpo Intl Airport

What is the cheapest month to book a flight from Ontario to Seoul Gimpo Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Ontario to Seoul Gimpo Intl Airport (average of $373). Flying from Ontario to Seoul Gimpo Intl Airport in September is currently the most expensive (average of $1,272). 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.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Gimpo Intl. 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 from for flights from Ontario to Seoul Gimpo Intl?

    For a flight from Ontario to Seoul Gimpo Intl, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city. Ontario is the only Ontario airport and it handles 0 outbound flights to Seoul Gimpo Intl per day. 0 airlines have flights to Seoul Gimpo Intl from Ontario on a regular basis.

  • How long is the flight from Ontario to Seoul Gimpo Intl Airport?

    A quick flight from Ontario to Seoul Gimpo Intl Airport can take about 23h 05m. Japan Airlines provides one of the quickest options available for as low as $2,054. The distance between Ontario and Seoul Gimpo Intl Airport is about 5986 mi.

  • Can I find deals for flights from Ontario to Gimpo Intl that include hotel bookings?

    Yes. In addition to deals on Ontario to Gimpo Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Gimpo Intl?

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

  • Can I find deals for business class flights from Ontario to Gimpo Intl?

    Yes. Cheapflights offers flight deals from Ontario to Gimpo Intl 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 Ontario to Seoul Gimpo Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Seoul Gimpo Intl Airport (average of $373). Flying from Ontario to Seoul Gimpo Intl Airport in September is currently the most expensive (average of $1,272). 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.

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