Title: Cheap flights from Seattle to Seoul ( SEA - GMP) - Expedia.com ![](https://images.trvl-media.com/place/178308/0f4f99b6-31cf-474b-8e82-69823a56dfad.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178308/0f4f99b6-31cf-474b-8e82-69823a56dfad.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $629 Cheap Flights from Seattle (SEA) to Seoul (GMP) [View $629 flight on Mon, Jan 11, 2027](https://expedia.com/Flights-Search?trip=oneway&leg1=from:SEA,to:GMP,departure:1/11/2027TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:629.00&airProductToken=AQqsAQpBCMqYARIENzUzNRiSASCLuAEoiJ6iAzC3n6IDOFNAAFgBaghFQ09TUFNWRnIIU0xYMDBNWjF6CgjBggESBDY0MjAKMwjKmAESAjE1GIu4ASCnGyiToaIDMOOmogM4U0ABWAFqCEVDT1NQU1ZGcghTTFgwME1aMQoyCMqYARICOTUYpxsghnso1qeiAzDxqKIDOFNAAVgBaghFQ09TUFNWRnIIU0xYMDBNWjESCggBEAEYASoCSkwYASIECAEQASgCKAMoBDAB) ## Popular airlines from Seattle-Tacoma International Airport (SEA) to Gimpo Intl. Airport (GMP) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_NH.svg) All Nippon Airways [](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:GMP,departure:3/22/2026TANYT&leg2=from:GMP,to:SEA,departure:3/29/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"NH"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_JL.svg) Japan Airlines [](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:GMP,departure:3/22/2026TANYT&leg2=from:GMP,to:SEA,departure:3/29/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"JL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BR.svg) EVA Airways [](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:GMP,departure:3/22/2026TANYT&leg2=from:GMP,to:SEA,departure:3/29/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BR"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_CA.svg) Air China [](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:GMP,departure:3/22/2026TANYT&leg2=from:GMP,to:SEA,departure:3/29/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"CA"}}]) - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* - ![](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our OneKeyCash [Learn about One Key](https://www.expedia.com/welcome-one-key) ## Cheap Flights from Seattle to Seoul (SEA-GMP) Prices were available within the past 7 days and start at $629 for one-way flights and $880 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Tue, Aug 25 - Thu, Sep 3 SEA Seattle GMP Seoul $880 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:GMP,departure:8/25/2026TANYT&leg2=from:GMP,to:SEA,departure:9/3/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:879.76&airProductToken=AQqkAQo1CMGGARIEODgwORiSASC4jQEojIiWAzDSiJYDOEdAAFgBaghTVEFOREFSRHIIR0xYWDYyVEcKNAjBhgESAjIzGLiNASCKugEo3ZCWAzDdlZYDOEdAAVgBaghTVEFOREFSRHIIR0xYWDYyVEcKNQjPtAESBDExNTUYiroBIIZ7KNyXlgMwxZiWAzhXQAFYAWoIU1RBTkRBUkRyCEdMWFg2MlRHCqQBCjUIz7QBEgQxMTQ1GIZ7IIq6ASjO4JYDMLLhlgM4V0AAWAFqCFNUQU5EQVJEcghHTFhYNjJURwo0CMGGARICMjQYiroBILiNASic5ZYDMNvplgM4R0ABWAFqCFNUQU5EQVJEcghHTFhYNjJURwo1CMGGARIEODgwNhi4jQEgkgEoueyWAzD87JYDOEdAAVgBaghTVEFOREFSRHIIR0xYWDYyVEcSCggIEAIYAioCQUMYASIECAEQASgHKAMoBDAB) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Mon, Sep 7 - Mon, Sep 14 SEA Seattle GMP Seoul $889 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:GMP,departure:9/7/2026TANYT&leg2=from:GMP,to:SEA,departure:9/14/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:888.80&airProductToken=AQqkAQo1CMGGARIEODgwMxiSASC4jQEo95WXAzDDlpcDOEdAAFgBaghTVEFOREFSRHIIR0xYWDYyVEcKNAjBhgESAjIzGLiNASCKugEo3ZeXAzDdnJcDOEdAAVgBaghTVEFOREFSRHIIR0xYWDYyVEcKNQi3hgESBDEzMjYYiroBIIZ7KLillwMwq6aXAzhSQAFYAWoIU1RBTkRBUkRyCEdMWFg2MlRHCqQBCjUIz7QBEgQxMTQ1GIZ7IIq6ASiu3JcDMJLdlwM4V0AAWAFqCFNUQU5EQVJEcghHTFhYNjJURwo0CMGGARICMjQYiroBILiNASj84JcDMKzllwM4R0ABWAFqCFNUQU5EQVJEcghHTFhYNjJURwo1CMGGARIEODgwNhi4jQEgkgEomeiXAzDc6JcDOEdAAVgBaghTVEFOREFSRHIIR0xYWDYyVEcSCggIEAIYAioCQUMYASIECAEQASgHKAMoBDAB) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Mon, Sep 7 - Mon, Sep 14 SEA Seattle GMP Seoul $892 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:GMP,departure:9/7/2026TANYT&leg2=from:GMP,to:SEA,departure:9/14/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:891.43&airProductToken=AQqkAQo1CMGGARIEODgwMxiSASC4jQEo95WXAzDDlpcDOEdAAFgBaghTVEFOREFSRHIIR0xYWDYyVEcKNAjBhgESAjIzGLiNASCKugEo3ZeXAzDdnJcDOEdAAVgBaghTVEFOREFSRHIIR0xYWDYyVEcKNQjPtAESBDExMzUYiroBIIZ7KMKllwMwuqaXAzhXQAFYAWoIU1RBTkRBUkRyCEdMWFg2MlRHCqQBCjUIt4YBEgQxMzI1GIZ7IIq6ASiu3JcDMJzdlwM4UkAAWAFqCFNUQU5EQVJEcghHTFhYNjJURwo0CMGGARICMjQYiroBILiNASj84JcDMKzllwM4R0ABWAFqCFNUQU5EQVJEcghHTFhYNjJURwo1CMGGARIEODgwNhi4jQEgkgEomeiXAzDc6JcDOEdAAVgBaghTVEFOREFSRHIIR0xYWDYyVEcSCggIEAIYAioCQUMYASIECAEQASgHKAMoBDAB) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Mon, Sep 7 - Mon, Sep 14 SEA Seattle GMP Seoul $901 Roundtrip found 6 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:GMP,departure:9/7/2026TANYT&leg2=from:GMP,to:SEA,departure:9/14/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:900.37&airProductToken=AQqkAQo1CMGGARIEODgwMxiSASC4jQEo95WXAzDDlpcDOEdAAFgBaghTVEFOREFSRHIIR0xYWDYyVEcKNAjBhgESAjIzGLiNASCKugEo3ZeXAzDdnJcDOEdAAVgBaghTVEFOREFSRHIIR0xYWDYyVEcKNQi3hgESBDEzMjYYiroBIIZ7KLillwMwq6aXAzhSQAFYAWoIU1RBTkRBUkRyCEdMWFg2MlRHCqQBCjUIt4YBEgQxMzI1GIZ7IIq6ASiu3JcDMJzdlwM4UkAAWAFqCFNUQU5EQVJEcghHTFhYNjJURwo0CMGGARICMjQYiroBILiNASj84JcDMKzllwM4R0ABWAFqCFNUQU5EQVJEcghHTFhYNjJURwo1CMGGARIEODgwNhi4jQEgkgEomeiXAzDc6JcDOEdAAVgBaghTVEFOREFSRHIIR0xYWDYyVEcSCggIEAIYAioCQUMYASIECAEQASgHKAMoBDAB) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Thu, Sep 3 - Thu, Sep 10 SEA Seattle GMP Seoul $920 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:GMP,departure:9/3/2026TANYT&leg2=from:GMP,to:SEA,departure:9/10/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:919.72&airProductToken=AQqkAQo1CMGGARIEODgwNxiSASC4jQEoqOuWAzDq65YDOEdAAFgBaghTVEFOREFSRHIIR0xXWDYyVEcKNAjBhgESAjIzGLiNASCKugEo_fWWAzD9-pYDOEdAAVgBaghTVEFOREFSRHIIR0xXWDYyVEcKNQjPtAESBDExNTUYiroBIIZ7KPz8lgMw5f2WAzhXQAFYAWoIU1RBTkRBUkRyCEdMV1g2MlRHCqQBCjUIz7QBEgQxMTQ1GIZ7IIq6ASiur5cDMJKwlwM4V0AAWAFqCFNUQU5EQVJEcghHTFhYNjJURwo0CMGGARICMjQYiroBILiNASj8s5cDMKy4lwM4R0ABWAFqCFNUQU5EQVJEcghHTFhYNjJURwo1CMGGARIEODgwNhi4jQEgkgEombuXAzDcu5cDOEdAAVgBaghTVEFOREFSRHIIR0xYWDYyVEcSDAgIEAIYAioCQUMyABgBIgQIARABKAcoAygEMAE) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Tue, May 5 - Tue, May 12 SEA Seattle GMP Seoul $927 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:GMP,departure:5/5/2026TANYT&leg2=from:GMP,to:SEA,departure:5/12/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:926.45&airProductToken=AQqkAQo1CMGGARIEODgwORiSASC4jQEojJyMAzDPnIwDOEdAAFgBaghTVEFOREFSRHIIR0xYWDYyVEcKNAjBhgESAjIzGLiNASCKugEo2KSMAzDdqYwDOEdAAVgBaghTVEFOREFSRHIIR0xYWDYyVEcKNQjPtAESBDExNTUYiroBIIZ7KNyrjAMwxayMAzhXQAFYAWoIU1RBTkRBUkRyCEdMWFg2MlRHCqIBCjQIz7QBEgQzMzU1GIZ7II9RKKjhjAMwquKMAzhXQABYAWoIU1RBTkRBUkRyCEdMWFg2MlRHCjMIwYYBEgIzMBiPUSC4jQEoneOMAzC26IwDOEdAAVgBaghTVEFOREFSRHIIR0xYWDYyVEcKNQjBhgESBDg4MTAYuI0BIJIBKN_rjAMwoOyMAzhHQAFYAWoIU1RBTkRBUkRyCEdMWFg2MlRHEgoICBACGAIqAkFDGAEiBAgBEAEoBygDKAQwAQ) ![Japan Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/JL.gif) Tue, Mar 10 - Tue, Mar 17 SEA Seattle GMP Seoul $962 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:GMP,departure:3/10/2026TANYT&leg2=from:GMP,to:SEA,departure:3/17/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:961.53&airProductToken=AQqoAQo_CMqYARIENTQyOBiSASCycSjzoIcDMIGihwM4UUAAWAFqCEVDT1NQU1ZDcghRTFgwN0NaMXoJCMGmARIDNzI1CjEIypgBEgExGLJxIKcbKMejhwMw9KiHAzhRQAFYAWoIRUNPU1BTVkNyCFFMWDA3Q1oxCjIIypgBEgI5NRinGyCGeyj2qYcDMJGrhwM4UUABWAFqCEVDT1NQU1ZDcghRTFgwN0NaMQqpAQoyCMqYARICOTIYhnsgpxso-emHAzD26ocDOFFAAFgBaghFQ09TUFNWQ3IIUUxYMDdDWjEKMQjKmAESATIYpxsgsnEo4eyHAzCR8YcDOFFAAVgBaghFQ09TUFNWQ3IIUUxYMDdDWjEKQAjKmAESBDYzMzkYsnEgkgEonfKHAzCo84cDOFFAAVgBaghFQ09TUFNWQ3IIUUxYMDdDWjF6CgjBpgESBDEzNDASCggBEAEYASoCSkwYASIECAEQASgCKAMoBDAB) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Tue, Apr 14 - Thu, Apr 23 SEA Seattle GMP Seoul $969 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:GMP,departure:4/14/2026TANYT&leg2=from:GMP,to:SEA,departure:4/23/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:968.04&airProductToken=AQqcAQozCMGmARIDMzgzGJIBILJxKJ6wigMwp7GKAzhRQABYAWoIRUNPU1BTVkNyCFFMWDA3Q1oxCjEIypgBEgExGLJxIKcbKM-3igMw7byKAzhRQAFYAWoIRUNPU1BTVkNyCFFMWDA3Q1oxCjIIypgBEgI5NRinGyCGeyjTvooDMN-_igM4UUABWAFqCEVDT1NQU1ZDcghRTFgwN0NaMQqcAQoyCMqYARICOTIYhnsgpxsomYqLAzCgi4sDOFFAAFgBaghFQ09TUFNWQ3IIUUxYMDdDWjEKMQjKmAESATIYpxsgsnEomIyLAzDNkIsDOFFAAVgBaghFQ09TUFNWQ3IIUUxYMDdDWjEKMwjBpgESAzc1OBiycSCSASiflIsDMKaViwM4UUABWAFqCEVDT1NQU1ZDcghRTFgwN0NaMRIKCAEQARgBKgJKTBgBIgQIARABKAIoAygEMAE) ![EVA Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/BR.gif) Mon, Aug 10 - Sat, Aug 15 SEA Seattle GMP Seoul $1,193 Roundtrip found 5 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:GMP,departure:8/10/2026TANYT&leg2=from:GMP,to:SEA,departure:8/15/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1192.93&airProductToken=AQpBCh4IwqQBEgIyNRiSASDzIyim15QDMPHclAM4VkAAWAEKHwjCpAESAzE1NhjTBCCGeyiw4ZQDMMbilAM4VkABWAEKQQofCMKkARIDMTU1GIZ7INMEKMKNlQMw3Y6VAzhTQABYAQoeCMKkARICMjQY8yMgkgEopJKVAzDCl5UDOFNAAVgBEgoIARABGAEqAkJSGAEiBAgBEAEoBDAB) ![All Nippon Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/NH.gif) Wed, Dec 9 - Wed, Dec 30 SEA Seattle GMP Seoul $1,475 Roundtrip found 4 hours ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:SEA,to:GMP,departure:12/9/2026TANYT&leg2=from:GMP,to:SEA,departure:12/30/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1474.03&airProductToken=AQquAQpBCM6QARIENTM5MRiSASC4jQEo-6yfAzC-rZ8DOFdAAFgBaghFQ09CQVNJQ3IIV0tYMFdXVzN6CgjBhgESBDg4MDMKNAjOkAESAzExNRi4jQEgpxsok6-fAzCJtJ8DOFdAAVgBaghFQ09CQVNJQ3IIV0tYMFdXVzMKMwjOkAESAzg2NxinGyCGeyjUtJ8DMOq1nwM4V0ABWAFqCEVDT0JBU0lDcghXS1gwV1dXMwpqCjMIzpABEgM4NjQYhnsgpxsojZKhAzCFk6EDOFdAAFgBaghFQ09CQVNJQ3IIV0tYMFdXVzMKMwjOkAESAzExOBinGyCSASiflqEDMMCaoQM4V0ABWAFqCEVDT0JBU0lDcghXS1gwV1dXMxIKCAEQARgBKgJOSBgBIgQIARABKAIoAygEMAE) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.com/deals?rfrr=FTG_SPRING_PROMO_) ## Alternative airports near Seoul Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:ICN,departure:3/22/2026TANYT&leg2=from:ICN,to:SEA,departure:4/15/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ICN Incheon Intl. Cheapest 47 min [Flights from $1,084 ](https://www.expedia.com/Flights-Search?leg1=from:SEA,to:ICN,departure:3/22/2026TANYT&leg2=from:ICN,to:SEA,departure:4/15/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Frequently asked questions ### How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.) cost? ### What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.)? ### Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.)? ### What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.)? ### How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.)? ### What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.)? ### What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.)? ### What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.)? ### How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.)? ### Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.)? ### How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.) flight with Expedia? ### What airports do you fly into for Seoul from Seattle - Tacoma Intl. (SEA)? ### Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.) at the last minute? ### Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.) flight and hotel package? ### Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Seoul (GMP-Gimpo Intl.)? ## Travel information | Origin airport | Seattle - Tacoma Intl. | | ------------------- | --------------------------------------------- | | Destination airport | Gimpo Intl. | | Airlines serving | Air China, All Nippon Airways, Japan Airlines | | Roundtrip price | $880 | | Distance | 5185 mi | ## Book with confidence # Seattle to Seoul Flights The cheapest times to fly from Seattle to Seoul On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Seoul are during the month of August. You can find some of the cheapest flights from Seattle to Seoul with Expedia's search tool and vast selection of airlines. The best time to book a flight from Seattle to Seoul Sunday is one of the best days to book for cheap flights from Seattle to Seoul: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance. How to find cheap round-trip tickets from Seattle to Seoul Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Seoul in 2026\. You can also book with separate airlines for your outbound and return journeys, from $629 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference\*. This is available for a small fee, and is free to One Key Gold and Platinum tier members. Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Seoul flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps. You could also save big by booking one of Expedia's [vacation packages](https://www.expedia.com/package-deals). Bundling together your Seattle to Seoul airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures. \*Terms apply. Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. The percentages you see are averages. \*Flight schedules are subject to change. ## Explore a world of travel with Expedia - Lodging - Packages - Cars - [Hotels near Gimpo Int'l Airport Station ](https://www.expedia.com/Gimpo-Intl-Airport-Station-Hotels.d6164595.Travel-Guide-Hotels) - [Hotels near Lotte Mall Gimpo Airport ](https://www.expedia.com/Lotte-Mall-Gimpo-Airport-Hotels.0-l553248621532769434-0.Travel-Guide-Filter-Hotels) - [Hotels near Airport Market Station ](https://www.expedia.com/Airport-Market-Station-Hotels.d6165469.Travel-Guide-Hotels) - [Hotels near Banghwa-dong ](https://www.expedia.com/Banghwa-Dong-Seoul-Hotels.0-n553248635976007678-0.Travel-Guide-Filter-Hotels) - [Apartments in Magok Station ](https://www.expedia.com/Magok-Station-Apartments.d6164591-aaApartments.Travel-Guide-Accommodation) - [Hotels near Magok Station ](https://www.expedia.com/Magok-Station-Hotels.d6164591.Travel-Guide-Hotels) - [Hotels near Gangseo-gu ](https://www.expedia.com/Gangseo-Gu-Seoul-Hotels.0-n6226550-0.Travel-Guide-Filter-Hotels) - 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