HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Gimpo Intl

$519+ 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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — GMP
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Gimpo Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Gimpo Intl

Best flights from Ontario to Gimpo Intl
Discover carefully curated flight deals from Ontario to Gimpo Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This Ovago deal was found by Cheapflights users on 12/10. 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.
Fri 4/176:00 amONT - GMP
2 stops23h 50mJapan Airlines
Wed 4/2212:05 pmGMP - ONT
2 stops22h 14mJapan Airlines
Deal found 12/10$1,766
This Japan Airlines deal was found by Cheapflights users on 12/9. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/246:00 amONT - GMP
2 stops47h 05mMultiple Airlines
Sat 1/318:00 amGMP - ONT
2 stops23h 18mMultiple Airlines
Deal found 12/9$1,978
This Japan Airlines deal was found by Cheapflights users on 12/11. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/1010:58 amONT - GMP
2 stops42h 07mMultiple Airlines
Sat 1/177:40 pmGMP - ONT
2 stops35h 38mMultiple Airlines
Deal found 12/11$2,304
This Japan Airlines deal was found by Cheapflights users on 12/10. 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 4/1711:59 pmONT - GMP
2 stops42h 46mMultiple Airlines
Wed 4/227:55 amGMP - ONT
2 stops21h 38mMultiple Airlines
Deal found 12/10$2,823
This American Airlines deal was found by Cheapflights users on 12/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/411:59 pmONT - GMP
2 stops29h 06mMultiple Airlines
Sat 1/248:00 amGMP - ONT
2 stops27h 45mMultiple Airlines
Deal found 12/9$4,095

Find 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 December 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,766
(Ovago)

One-way from

$519
(Japan Airlines)

Popular in

June

Cheapest in

February

Average price

$1,233
Provider with most accurate pricing for Ontario-Seoul Gimpo Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Seoul Gimpo Intl flights.
Search Deals
From Ontario to Seoul Gimpo Intl
Search Deals
One-way flight from Ontario to Seoul Gimpo Intl
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($134 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 12, 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

Fri 4/17

6:00 am-9:50 pm

2 stops23h 50m

Seoul Gimpo Intl

Wed 4/22

12:05 pm-6:19 pm

2 stops22h 14m

$1,766

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sat 1/24

6:00 am-10:05 pm

2 stops47h 05m

Seoul Gimpo Intl

Sat 1/31

8:00 am-2:18 pm

2 stops23h 18m

$1,978

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sat 1/10

10:58 am-10:05 pm

2 stops42h 07m

Seoul Gimpo Intl

Sat 1/17

7:40 pm-2:18 pm

2 stops35h 38m

$2,304

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Fri 4/17

11:59 pm-10:45 am

2 stops42h 46m

Seoul Gimpo Intl

Wed 4/22

7:55 am-1:33 pm

2 stops21h 38m

$2,823

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sun 1/4

11:59 pm-10:05 pm

2 stops29h 06m

Seoul Gimpo Intl

Sat 1/24

8:00 am-6:45 pm

2 stops27h 45m

$4,095

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Thu 1/22

6:00 am-10:05 pm

2 stops23h 05m

$519

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sun 1/25

6:00 am-10:05 pm

2 stops23h 05m

$871

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Mon 1/26

6:00 am-10:05 pm

2 stops23h 05m

$871

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Fri 1/30

6:00 am-10:05 pm

2 stops23h 05m

$872

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Thu 1/29

6:00 am-10:05 pm

2 stops23h 05m

$872

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 13 results
1
2

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 December.
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 50m. Japan Airlines provides one of the quickest options available for as low as $1,766. 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Gimpo Intl

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Incheon Intl flights
San Francisco to Incheon Intl flights
Los Angeles to Gimpo Intl flights
San Francisco to Gimpo Intl flights
Ontario to Incheon Intl flights
Las Vegas to Incheon Intl flights
San Diego to Incheon Intl flights
San Jose to Incheon Intl flights
San Diego to Gimpo Intl flights
Santa Ana to Incheon Intl flights
Las Vegas to Gimpo Intl flights
Oakland to Incheon Intl flights
Burbank to Incheon Intl flights
San Jose to Gimpo Intl flights
Sacramento to Incheon Intl flights
Long Beach to Incheon Intl flights
Medford to Incheon Intl flights
Reno to Incheon Intl flights
Palm Springs to Incheon Intl flights
Monterey to Incheon Intl flights
Santa Barbara to Incheon Intl flights
Long Beach to Gimpo Intl flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.