Cheap Flights from London to Seattle
Browse current best options from London. Become a member to unlock all deals and get alerts when new deals appear.
Deals from
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RatePunk searches hundreds of travel sites at once for deals on flights to Seattle
Prices updated 24 days ago
486,190 searches this week
171 airlines compared
80%+ AI score for best value
Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)
Today’s best flight deals from London to Seattle
Explore current cheapest deals departing from London to Seattle
Round trip
Sort by: Cheapest
November 11 - November 15
LHR - Seattle
$724
$508
Round trip
July 8 - July 15
LHR - Seattle
$799
$509
Round trip
July 9 - July 27
LHR - Seattle
$764
$511
Round trip
October 23 - October 30
LGW - Seattle
$747
$511
Round trip
October 15 - October 22
LGW - Seattle
$747
$515
Round trip
November 5 - November 14
LHR - Seattle
$699
$515
Round trip
July 8 - July 16
LHR - Seattle
$793
$518
Round trip
July 8 - July 20
LHR - Seattle
$776
$519
Round trip
September 4 - September 14
LHR - Seattle
$762
$521
Round trip
September 1 - September 10
LHR - Seattle
$762
$522
Round trip
Unlock all 500+ flight deals to Seattle and get alerts when great deals appear
Route Intelligence — 486,190 Searches this Week
Insights for flights from London to Seattle
How much is a round trip from London to Seattle
Regular price: $659 - $1,341
Prices for flights from London to Seattle are currently below the regular range.
The regular price range for flights from London to Seattle is between $659 and $1341. The current lowest deal is $508 with Icelandair, for travel from November 11 to November 15.
now $508
Low $659
High $1,341
The cheapest time to fly from London to Seattle
Flights from London to Seattle are cheapest in January, with a median price of $536. The most expensive month to fly is March, with a median price of $2532. Prices are generally lower from January to December.
January
Flights from $536
March
Flights from $2,532
Direct flights from London to Seattle
British Airways
Last-minute flights going from London to Seattle
Sat, Jun 20
LHR - Seattle
London (LHR) - Seattle (SEA)
Icelandair
$864
$525
One-way
Mon, Jun 22
LHR - Seattle
London (LHR) - Seattle (SEA)
Icelandair
$956
$552
One-way
Tue, Jun 23
LHR - Seattle
London (LHR) - Seattle (SEA)
Icelandair
$873
$524
One-way
Tue, Jun 23
LHR - Seattle
London (LHR) - Seattle (SEA)
Icelandair
$956
$560
One-way
Tue, Jun 23
LHR - Seattle
London (LHR) - Seattle (SEA)
Icelandair
$949
$562
One-way
Fri, Jun 26
LGW - Seattle
London (LGW) - Seattle (SEA)
Icelandair
$843
$525
One-way
Biggest price drops on these dates for flights from London to Seattle
Dec 10 - Dec 28
$972 → $552
43%
Dec 1 - Dec 15
$975 → $561
42%
Jun 22 - Jun 26
$956 → $552
42%
Dec 2 - Dec 14
$957 → $560
42%
Popular Airports to fly from London to Seattle
London - Seattle route insights
💸 Price insights
Recent fares are above the typical level
Recent fares from London to Seattle are above the typical level, with a median price of $1059.
📅 Best time to fly
January is historically the cheapest month to fly
Historically, January is the cheapest month to fly from London to Seattle, with a median price of $536.
⏱️ Flight duration
Flights typically take 27h 59m
The typical flight duration from London to Seattle is 27h 59m, covering a distance of 7702 km.
✈️ Airlines & availability
Connecting flights are dominant on this route
Connecting flights make up 86.7% of deals, with a median of 2 stopovers.
🏆 Airline highlight
British Airways offers direct flights
British Airways is one airline offering direct flights from London to Seattle.
🎯 Booking tip
Deals appear frequently for this route
Deals for flights from London to Seattle appear frequently, with about 0.77 deals per day.
London main airports to depart from
Heathrow (LHR)
Heathrow offers a good option for flights from London to Seattle, with competitive pricing available.
📍 ~23 km from city center (reachable by car or train)
💸 Flights from ~$508
Gatwick (LGW)
Gatwick provides another choice for your journey from London to Seattle.
📍 ~40 km from city center (reachable by car or train)
💸 Flights from ~$511
London City (LCY)
London City Airport is a convenient option for departing to Seattle.
📍 ~11 km from city center (reachable by car or train)
💸 Flights from ~$631
London Southend (SEN)
London Southend Airport offers an alternative departure point for flights to Seattle.
📍 ~59 km from city center (reachable by car or train)
💸 Flights from ~$871
London Stansted (STN)
London Stansted is an option for travelers flying from London to Seattle.
📍 ~51 km from city center (reachable by car or train)
💸 Flights from ~$625
Luton (LTN)
Luton Airport is available for flights departing from London to Seattle.
📍 ~45 km from city center (reachable by car or train)
💸 Flights from ~$708
Seattle main airports to arrive at
Seattle–Tacoma International (SEA)
Seattle–Tacoma International Airport is a primary arrival option for flights from London to Seattle.
📍 ~20 km from Seattle (reachable by car)
💸 Flights from ~$508
Boeing Field (BFI)
Boeing Field is an alternative arrival option for flights from London to Seattle.
📍 ~8 km from Seattle (reachable by car)
💸 Flights from ~$1172
Kenmore Air Harbor Seaplane Base (LKE)
Kenmore Air Harbor Seaplane Base is an alternative arrival option for flights from London to Seattle.
📍 ~3 km from Seattle (reachable by car)
💸 Flights from ~$1267
Airports nearby Seattle used as alternative
Paine Field Everett (PAE)
Paine Field Everett offers a convenient alternative for North Seattle residents with shorter security wait times.
📍 ~35 km from Seattle (reachable by car)
💸 Flights from ~$884
Portland International (PDX)
Portland International is a major international hub that can be a price competitor for long-haul flights.
📍 ~230 km from Seattle (reachable by car or train)
💸 Flights from ~$672
Vancouver International (YVR)
Vancouver International is a major international gateway with extensive flight options and potential for lower fares.
📍 ~200 km from Seattle (reachable by car)
💸 Flights from ~$623
Bellingham International (BLI)
Bellingham International is a primary low-cost carrier airport, often featuring budget-friendly fares.
📍 ~145 km from Seattle (reachable by car)
💸 Flights from ~$753
Abbotsford International (YXX)
Abbotsford International is an alternative low-cost gateway for Canadian domestic connections and specific cheaper flights.
📍 ~170 km from Seattle (reachable by car)
💸 Flights from ~$730
Business & First Class Flight Deals to Seattle
Discover luxury on the budget with premium cabin class on flights from London to Seattle.
Elite
Best Elite deals to Seattle
Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.
From LHR
Elite
Jul 13
Seattle, United States
94% AI deal score
$4,909
$2,591
Save $2,318
From LHR
Elite
Jul 17
Seattle, United States
94% AI deal score
$2,849
$1,617
Save $1,232
From LHR
Elite
Jul 17
Seattle, United States
94% AI deal score
$2,788
$1,618
Save $1,170
From LHR
Elite
Jul 31
Seattle, United States
94% AI deal score
$2,852
$1,655
Save $1,197
From LHR
Elite
Jul 15
Seattle, United States
93% AI deal score
$4,606
$2,582
Save $2,024
From LHR
Elite
Jul 20
Seattle, United States
93% AI deal score
$4,420
$2,598
Save $1,822
From LHR
Elite
Jul 20
Seattle, United States
93% AI deal score
$4,576
$2,601
Save $1,975
From LHR
Elite
Jul 08
Seattle, United States
93% AI deal score
$4,592
$2,622
Save $1,970
From LHR
Elite
Jul 14
Seattle, United States
93% AI deal score
$4,806
$2,632
Save $2,174
From LHR
Elite
Jul 08
Seattle, United States
93% AI deal score
$4,513
$2,643
Save $1,870
From LHR
Elite
Sep 11
Seattle, United States
93% AI deal score
$2,553
$1,615
Save $938
From LHR
Elite
Sep 11
Seattle, United States
93% AI deal score
$2,559
$1,627
Save $932
From LHR
Elite
Sep 19
Seattle, United States
93% AI deal score
$2,560
$1,627
Save $933
From LHR
Elite
Jul 31
Seattle, United States
93% AI deal score
$2,674
$1,636
Save $1,038
From LHR
Elite
Jul 17
Seattle, United States
93% AI deal score
$2,672
$1,637
Save $1,035
From LHR
Elite
Jul 31
Seattle, United States
93% AI deal score
$2,677
$1,655
Save $1,022
From LHR
Elite
Jul 31
Seattle, United States
93% AI deal score
$2,677
$1,655
Save $1,022
From LHR
Elite
Jul 31
Seattle, United States
93% AI deal score
$2,673
$1,655
Save $1,018
From LHR
Elite
Jul 29
Seattle, United States
93% AI deal score
$2,753
$1,689
Save $1,064
From LHR
Elite
Jul 17
Seattle, United States
93% AI deal score
$2,650
$1,689
Save $961
From LHR
Elite
Jul 29
Seattle, United States
93% AI deal score
$2,665
$1,689
Save $976
From LHR
Elite
Jul 29
Seattle, United States
93% AI deal score
$2,672
$1,689
Save $983
From LHR
Elite
Jul 23
Seattle, United States
93% AI deal score
$2,717
$1,707
Save $1,010
From LHR
Elite
Jun 22
Seattle, United States
92% AI deal score
$3,928
$2,591
Save $1,337
From LHR
Elite
Jun 22
Seattle, United States
92% AI deal score
$3,946
$2,602
Save $1,344
From LHR
Elite
Jul 23
Seattle, United States
92% AI deal score
$4,435
$2,632
Save $1,803
From LHR
Elite
Jun 22
Seattle, United States
92% AI deal score
$3,928
$2,648
Save $1,280
From LHR
Elite
Jul 15
Seattle, United States
92% AI deal score
$4,571
$2,847
Save $1,724
From LHR
Elite
Jul 15
Seattle, United States
92% AI deal score
$4,621
$2,875
Save $1,746
From LHR
Elite
Jul 09
Seattle, United States
92% AI deal score
$4,817
$2,887
Save $1,930
From LHR
Elite
Aug 08
Seattle, United States
92% AI deal score
$2,389
$1,618
Save $771
From LHR
Elite
Sep 13
Seattle, United States
92% AI deal score
$2,557
$1,646
Save $911
From LHR
Elite
Sep 17
Seattle, United States
92% AI deal score
$2,564
$1,685
Save $879
From LHR
Elite
Sep 13
Seattle, United States
92% AI deal score
$2,565
$1,702
Save $863
From LHR
Elite
Jul 31
Seattle, United States
92% AI deal score
$2,622
$1,707
Save $915
From LHR
Elite
Jul 31
Seattle, United States
92% AI deal score
$2,636
$1,758
Save $878
From LGW
Elite
Jul 01
Seattle, United States
91% AI deal score
$3,762
$2,586
Save $1,176
From LGW
Elite
Jul 05
Seattle, United States
91% AI deal score
$3,774
$2,598
Save $1,176
From LHR
Elite
Aug 04
Seattle, United States
91% AI deal score
$3,878
$2,600
Save $1,278
From LGW
Elite
Jul 04
Seattle, United States
91% AI deal score
$3,773
$2,629
Save $1,144
From LHR
Elite
Jun 24
Seattle, United States
91% AI deal score
$3,775
$2,631
Save $1,144
From LGW
Elite
Jul 01
Seattle, United States
91% AI deal score
$3,765
$2,638
Save $1,127
From LGW
Elite
Jul 24
Seattle, United States
91% AI deal score
$3,984
$2,641
Save $1,343
From LHR
Elite
Aug 27
Seattle, United States
91% AI deal score
$3,827
$2,680
Save $1,147
From LHR
Elite
Sep 03
Seattle, United States
91% AI deal score
$5,897
$2,681
Save $3,216
From LHR
Elite
Oct 03
Seattle, United States
91% AI deal score
$7,888
$4,692
Save $3,196
From LHR
Elite
Oct 09
Seattle, United States
91% AI deal score
$8,148
$4,976
Save $3,172
From LHR
Elite
Aug 16
Seattle, United States
91% AI deal score
$2,203
$1,607
Save $596
From LHR
Elite
Aug 06
Seattle, United States
91% AI deal score
$2,318
$1,689
Save $629
From LGW
Elite
Jun 25
Seattle, United States
90% AI deal score
$3,552
$2,668
Save $884
From LGW
Elite
Jul 15
Seattle, United States
90% AI deal score
$3,937
$2,905
Save $1,032
From LHR
Elite
Aug 08
Seattle, United States
90% AI deal score
$2,200
$1,618
Save $582
From LHR
Elite
Aug 08
Seattle, United States
90% AI deal score
$2,198
$1,618
Save $580
From LHR
Elite
Aug 12
Seattle, United States
90% AI deal score
$2,210
$1,630
Save $580
From LHR
Elite
Aug 02
Seattle, United States
90% AI deal score
$2,279
$1,636
Save $643
From LHR
Elite
Aug 02
Seattle, United States
90% AI deal score
$2,281
$1,636
Save $645
From LHR
Elite
Aug 02
Seattle, United States
90% AI deal score
$2,183
$1,636
Save $547
From LHR
Elite
Aug 08
Seattle, United States
90% AI deal score
$2,203
$1,637
Save $566
From LGW
Elite
Jun 25
Seattle, United States
89% AI deal score
$3,250
$2,637
Save $613
From LHR
Elite
Aug 04
Seattle, United States
89% AI deal score
$3,746
$2,869
Save $877
From LGW
Elite
Jul 01
Seattle, United States
89% AI deal score
$3,768
$2,906
Save $862
From LGW
Elite
Jul 09
Seattle, United States
89% AI deal score
$3,779
$2,906
Save $873
From LGW
Elite
Jul 01
Seattle, United States
89% AI deal score
$3,781
$2,906
Save $875
From LGW
Elite
Aug 07
Seattle, United States
89% AI deal score
$16,258
$12,081
Save $4,177
From LGW
Elite
Aug 04
Seattle, United States
89% AI deal score
$17,018
$12,447
Save $4,571
From LHR
Elite
Oct 09
Seattle, United States
89% AI deal score
$2,146
$1,614
Save $532
From LHR
Elite
Oct 09
Seattle, United States
89% AI deal score
$2,235
$1,700
Save $535
From LHR
Elite
Aug 02
Seattle, United States
89% AI deal score
$2,279
$1,707
Save $572
From LHR
Elite
Jun 26
Seattle, United States
89% AI deal score
$2,612
$1,820
Save $792
From LGW
Elite
Jun 23
Seattle, United States
88% AI deal score
$3,405
$2,854
Save $551
From LGW
Elite
Jun 23
Seattle, United States
88% AI deal score
$3,382
$2,866
Save $516
From LGW
Elite
Jun 23
Seattle, United States
88% AI deal score
$3,450
$2,906
Save $544
From LGW
Elite
Jun 25
Seattle, United States
88% AI deal score
$3,494
$2,906
Save $588
From LGW
Elite
Jun 24
Seattle, United States
88% AI deal score
$3,515
$2,906
Save $609
From LHR
Elite
Aug 03
Seattle, United States
88% AI deal score
$2,277
$1,738
Save $539
From LHR
Elite
Aug 20
Seattle, United States
88% AI deal score
$2,287
$1,741
Save $546
From LGW
Elite
Jun 24
Seattle, United States
87% AI deal score
$3,382
$2,866
Save $516
From LHR
Elite
Aug 03
Seattle, United States
86% AI deal score
$3,818
$2,867
Save $951
From LHR
Elite
Aug 04
Seattle, United States
86% AI deal score
$3,820
$2,867
Save $953
From LHR
Elite
Aug 06
Seattle, United States
86% AI deal score
$3,836
$2,907
Save $929
From LHR
Elite
Dec 31
Seattle, United States
86% AI deal score
$4,115
$3,202
Save $913
From LHR
Elite
Oct 02
Seattle, United States
86% AI deal score
$6,137
$4,095
Save $2,042
From LHR
Elite
Aug 02
Seattle, United States
86% AI deal score
$2,274
$1,634
Save $640
From LHR
Elite
Sep 04
Seattle, United States
86% AI deal score
$2,549
$1,917
Save $632
From LHR
Elite
Jun 26
Seattle, United States
86% AI deal score
$2,655
$2,099
Save $556
From LHR
Elite
Jun 26
Seattle, United States
86% AI deal score
$2,655
$2,099
Save $556
From LHR
Elite
Jul 31
Seattle, United States
85% AI deal score
$4,475
$3,309
Save $1,166
From LHR
Elite
Nov 21
Seattle, United States
84% AI deal score
$4,044
$3,205
Save $839
From LHR
Elite
Jul 23
Seattle, United States
84% AI deal score
$15,556
$12,082
Save $3,474
From LGW
Elite
Oct 13
Seattle, United States
84% AI deal score
$16,129
$12,411
Save $3,718
From LGW
Elite
Sep 17
Seattle, United States
84% AI deal score
$17,899
$12,961
Save $4,938
From LGW
Elite
Oct 14
Seattle, United States
83% AI deal score
$15,368
$11,978
Save $3,390
From LCY
Elite
Dec 11
Seattle, United States
83% AI deal score
$16,045
$12,558
Save $3,487
From LGW
Elite
Dec 11
Seattle, United States
83% AI deal score
$16,646
$12,645
Save $4,001
From LHR
Elite
Aug 27
Seattle, United States
83% AI deal score
$15,834
$12,755
Save $3,079
From LHR
Elite
Aug 27
Seattle, United States
83% AI deal score
$15,659
$12,777
Save $2,882
From LGW
Elite
Sep 05
Seattle, United States
83% AI deal score
$17,154
$13,397
Save $3,757
From LGW
Elite
Sep 05
Seattle, United States
83% AI deal score
$17,162
$13,397
Save $3,765
From LGW
Elite
Aug 11
Seattle, United States
83% AI deal score
$17,965
$13,549
Save $4,416
From LGW
Elite
Sep 17
Seattle, United States
83% AI deal score
$18,282
$13,710
Save $4,572