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Seattle → London

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SEA → LHR1 adulteconomy

30 flight options · 6 airlines

Round-trip flights

Fri, Nov 27 – Fri, Dec 4

Alaska Airlines
6:45 pmSEA
9h 35m
Nonstop
12:20 pm+1LHR
Alaska Airlines
2:45 pmLHR
10h 15m
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

British Airways
1:30 pmSEA
9h 30m
Nonstop
7:00 am+1LHR
British Airways
2:55 pmLHR
9h 55m
Nonstop
4:50 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Delta Air Lines
4:50 pmSEA
9h 50m
Nonstop
10:40 am+1LHR
Delta Air Lines
12:20 pmLHR
10h 25m
Nonstop
2:45 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

FI
2:35 pmSEA
12h 15m
KEF · 1h 20m
10:50 am+1LHR
FI
12:15 pmLHR
12h 45m
KEF · 1h 30m
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Air France
4:05 pmSEA
13h 40m
CDG · 2h 25m
1:45 pm+1LHR
Air France
6:20 amLHR
15h 30m
CDG · 3h 45m
1:50 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Air Canada
3:15 pmSEA
12h 35m
YVR · 1h 54m
11:50 am+1LHR
British Airways
2:55 pmLHR
9h 55m
Nonstop
4:50 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Alaska Airlines
6:45 pmSEA
9h 35m
Nonstop
12:20 pm+1LHR
Alaska Airlines
2:45 pmLHR
10h 15m
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

British Airways
6:45 pmSEA
9h 25m
Nonstop
12:10 pm+1LHR
British Airways
2:55 pmLHR
9h 55m
Nonstop
4:50 pmSEA

Round-trip total · 1 adult · Taxes included

Show 12 more flights

Fri, Nov 20 – Mon, Nov 23

British Airways
6:45 pmSEA
9h 25m
Nonstop
12:10 pm+1LHR
British Airways
2:55 pmLHR
9h 55m
Nonstop
4:50 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

British Airways
1:30 pmSEA
9h 30m
Nonstop
7:00 am+1LHR
British Airways
2:55 pmLHR
9h 55m
Nonstop
4:50 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Delta Air Lines
4:50 pmSEA
9h 50m
Nonstop
10:40 am+1LHR
Delta Air Lines
12:20 pmLHR
10h 25m
Nonstop
2:45 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

FI
2:35 pmSEA
12h 15m
KEF · 1h 20m
10:50 am+1LHR
FI
12:15 pmLHR
12h 45m
KEF · 1h 30m
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Alaska Airlines
9:20 pmSEA
13h 40m
BOS · 1h 50m
7:00 pm+1LHR
Alaska Airlines
2:45 pmLHR
10h 15m
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Alaska Airlines
8:31 amSEA
13h 19m
YYZ · 1h 35m
5:50 am+1LHR
Alaska Airlines
2:45 pmLHR
10h 15m
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Alaska Airlines
9:05 amSEA
13h 30m
PHL · 1h 27m
6:35 am+1LHR
Alaska Airlines
2:45 pmLHR
10h 15m
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Alaska Airlines
9:05 amSEA
13h 30m
PHL · 1h 27m
6:35 am+1LHR
Alaska Airlines
2:45 pmLHR
10h 15m
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Alaska Airlines
9:20 pmSEA
13h 40m
BOS · 1h 50m
7:00 pm+1LHR
Alaska Airlines
2:45 pmLHR
10h 15m
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Alaska Airlines
8:31 amSEA
13h 19m
YYZ · 1h 35m
5:50 am+1LHR
Alaska Airlines
2:45 pmLHR
10h 15m
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Air France
4:05 pmSEA
13h 40m
CDG · 2h 25m
1:45 pm+1LHR
Air France
6:20 amLHR
15h 30m
CDG · 3h 45m
1:50 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Air Canada
3:15 pmSEA
12h 35m
YVR · 1h 54m
11:50 am+1LHR
British Airways
2:55 pmLHR
9h 55m
Nonstop
4:50 pmSEA

Round-trip total · 1 adult · Taxes included

One-way flights

Fri, Nov 20 · One way

Alaska Airlines
6:45 pmSEA
9h 35m
Nonstop
12:20 pm+1LHR

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

British Airways
1:30 pmSEA
9h 30m
Nonstop
7:00 am+1LHR

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
4:50 pmSEA
9h 50m
Nonstop
10:40 am+1LHR

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

FI
2:35 pmSEA
12h 15m
KEF · 1h 20m
10:50 am+1LHR

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Air Canada
3:15 pmSEA
12h 35m
YVR · 1h 54m
11:50 am+1LHR

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Air France
4:05 pmSEA
13h 40m
CDG · 2h 25m
1:45 pm+1LHR

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

British Airways
6:45 pmSEA
9h 25m
Nonstop
12:10 pm+1LHR

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Alaska Airlines
9:05 amSEA
13h 30m
PHL · 1h 27m
6:35 am+1LHR

One-way total · 1 adult · Taxes included

Show 2 more flights

Fri, Nov 20 · One way

Alaska Airlines
9:20 pmSEA
13h 40m
BOS · 1h 50m
7:00 pm+1LHR

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Alaska Airlines
8:31 amSEA
13h 19m
YYZ · 1h 35m
5:50 am+1LHR

One-way total · 1 adult · Taxes included

Make this trip yours

SEA ⇄ LHR

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Alaska Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • 24-hour cancellationCancel within 24 hours of booking for a full refund when your departure is at least 7 days away. Closer to departure, the airline’s fare rules apply. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

Nov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-11-20 · one wayAlaska AirlinesAS100$530.402026-10-29T01:15:29Z
2026-11-20 · one wayBritish AirwaysBA52$582.402026-10-29T01:15:29Z
2026-11-20 · one wayDelta Air LinesDL20$592.802026-10-29T01:15:29Z
2026-11-27 → 2026-12-04Alaska AirlinesAS100 / AS101$805.802026-10-29T01:15:29Z
2026-11-27 → 2026-12-04British AirwaysBA52 / BA49$887.402026-10-29T01:15:29Z
2026-11-27 → 2026-12-04Delta Air LinesDL20 / DL21$907.802026-10-29T01:15:29Z
2026-11-20 · one wayFIFI680 + FI450$405.602026-10-29T01:15:29Z
2026-11-20 · one wayAir CanadaAC8807 + AC860$509.602026-10-29T01:15:29Z
2026-11-20 · one wayAir FranceAF77 + AF1780$540.802026-10-29T01:15:29Z
2026-11-27 → 2026-12-04FIFI680 + FI450 / FI451 + FI681$632.402026-10-29T01:15:29Z
2026-11-27 → 2026-12-04Air FranceAF77 + AF1780 / AF1381 + AF76$826.202026-10-29T01:15:29Z
2026-11-27 → 2026-12-04Air Canada / British AirwaysAC8807 + AC860 / BA49$830.202026-10-29T01:15:29Z
2026-11-20 → 2026-11-23Alaska AirlinesAS100 / AS101$821.602026-10-29T01:15:29Z
2026-11-20 · one wayBritish AirwaysBA48$582.402026-10-29T01:15:29Z
2026-11-27 → 2026-12-04British AirwaysBA48 / BA49$887.402026-10-29T01:15:29Z
2026-11-20 → 2026-11-23British AirwaysBA48 / BA49$904.802026-10-29T01:15:29Z
2026-11-20 → 2026-11-23British AirwaysBA52 / BA49$904.802026-10-29T01:15:29Z
2026-11-20 → 2026-11-23Delta Air LinesDL20 / DL21$925.602026-10-29T01:15:29Z
2026-11-20 · one wayAlaska AirlinesAS442 + BA66$499.202026-10-29T01:15:29Z
2026-11-20 · one wayAlaska AirlinesAS460 + BA238$499.202026-10-29T01:15:29Z
2026-11-20 · one wayAlaska AirlinesAS385 + BA92$499.202026-10-29T01:15:29Z
2026-11-20 → 2026-11-23FIFI680 + FI450 / FI451 + FI681$644.802026-10-29T01:15:29Z
2026-11-27 → 2026-12-04Alaska AirlinesAS460 + BA238 / AS101$779.802026-10-29T01:15:29Z
2026-11-27 → 2026-12-04Alaska AirlinesAS385 + BA92 / AS101$779.802026-10-29T01:15:29Z
2026-11-27 → 2026-12-04Alaska AirlinesAS442 + BA66 / AS101$779.802026-10-29T01:15:29Z
2026-11-20 → 2026-11-23Alaska AirlinesAS442 + BA66 / AS101$795.602026-10-29T01:15:29Z
2026-11-20 → 2026-11-23Alaska AirlinesAS460 + BA238 / AS101$795.602026-10-29T01:15:29Z
2026-11-20 → 2026-11-23Alaska AirlinesAS385 + BA92 / AS101$795.602026-10-29T01:15:29Z
2026-11-20 → 2026-11-23Air FranceAF77 + AF1780 / AF1381 + AF76$842.402026-10-29T01:15:29Z
2026-11-20 → 2026-11-23Air Canada / British AirwaysAC8807 + AC860 / BA49$847.602026-10-29T01:15:29Z

2026-11-20 · one way · $530.40

  • Alaska Airlines AS100: SEA 2026-11-20 18:45:00 → LHR 2026-11-21 12:20:00; nonstop; 575 minutes. Local airport times.

2026-11-20 · one way · $582.40

  • British Airways BA52: SEA 2026-11-20 13:30:00 → LHR 2026-11-21 07:00:00; nonstop; 570 minutes. Local airport times.

2026-11-20 · one way · $592.80

  • Delta Air Lines DL20: SEA 2026-11-20 16:50:00 → LHR 2026-11-21 10:40:00; nonstop; 590 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $805.80

  • Alaska Airlines AS100: SEA 2026-11-27 18:45:00 → LHR 2026-11-28 12:20:00; nonstop; 575 minutes. Local airport times.
  • Alaska Airlines AS101: LHR 2026-12-04 14:45:00 → SEA 2026-12-04 17:00:00; nonstop; 615 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $887.40

  • British Airways BA52: SEA 2026-11-27 13:30:00 → LHR 2026-11-28 07:00:00; nonstop; 570 minutes. Local airport times.
  • British Airways BA49: LHR 2026-12-04 14:55:00 → SEA 2026-12-04 16:50:00; nonstop; 595 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $907.80

  • Delta Air Lines DL20: SEA 2026-11-27 16:50:00 → LHR 2026-11-28 10:40:00; nonstop; 590 minutes. Local airport times.
  • Delta Air Lines DL21: LHR 2026-12-04 12:20:00 → SEA 2026-12-04 14:45:00; nonstop; 625 minutes. Local airport times.

2026-11-20 · one way · $405.60

  • FI FI680 / FI450: SEA 2026-11-20 14:35:00 → LHR 2026-11-21 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
    • FI680: SEA 2026-11-20 14:35:00 → KEF 2026-11-21 06:15:00; layover at KEF: 80 minutes.
    • FI450: KEF 2026-11-21 07:35:00 → LHR 2026-11-21 10:50:00.

2026-11-20 · one way · $509.60

  • Air Canada AC8807 / AC860: SEA 2026-11-20 15:15:00 → LHR 2026-11-21 11:50:00; 1 stop(s) via YVR; 755 minutes. Local airport times.
    • AC8807: SEA 2026-11-20 15:15:00 → YVR 2026-11-20 17:26:00; layover at YVR: 114 minutes.
    • AC860: YVR 2026-11-20 19:20:00 → LHR 2026-11-21 11:50:00.

2026-11-20 · one way · $540.80

  • Air France AF77 / AF1780: SEA 2026-11-20 16:05:00 → LHR 2026-11-21 13:45:00; 1 stop(s) via CDG; 820 minutes. Local airport times.
    • AF77: SEA 2026-11-20 16:05:00 → CDG 2026-11-21 10:50:00; layover at CDG: 145 minutes.
    • AF1780: CDG 2026-11-21 13:15:00 → LHR 2026-11-21 13:45:00.

2026-11-27 → 2026-12-04 · $632.40

  • FI FI680 / FI450: SEA 2026-11-27 14:35:00 → LHR 2026-11-28 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
    • FI680: SEA 2026-11-27 14:35:00 → KEF 2026-11-28 06:15:00; layover at KEF: 80 minutes.
    • FI450: KEF 2026-11-28 07:35:00 → LHR 2026-11-28 10:50:00.
  • FI FI451 / FI681: LHR 2026-12-04 12:15:00 → SEA 2026-12-04 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
    • FI451: LHR 2026-12-04 12:15:00 → KEF 2026-12-04 15:30:00; layover at KEF: 90 minutes.
    • FI681: KEF 2026-12-04 17:00:00 → SEA 2026-12-04 17:00:00.

2026-11-27 → 2026-12-04 · $826.20

  • Air France AF77 / AF1780: SEA 2026-11-27 16:05:00 → LHR 2026-11-28 13:45:00; 1 stop(s) via CDG; 820 minutes. Local airport times.
    • AF77: SEA 2026-11-27 16:05:00 → CDG 2026-11-28 10:50:00; layover at CDG: 145 minutes.
    • AF1780: CDG 2026-11-28 13:15:00 → LHR 2026-11-28 13:45:00.
  • Air France AF1381 / AF76: LHR 2026-12-04 06:20:00 → SEA 2026-12-04 13:50:00; 1 stop(s) via CDG; 930 minutes. Local airport times.
    • AF1381: LHR 2026-12-04 06:20:00 → CDG 2026-12-04 08:40:00; layover at CDG: 225 minutes.
    • AF76: CDG 2026-12-04 12:25:00 → SEA 2026-12-04 13:50:00.

2026-11-27 → 2026-12-04 · $830.20

  • Air Canada AC8807 / AC860: SEA 2026-11-27 15:15:00 → LHR 2026-11-28 11:50:00; 1 stop(s) via YVR; 755 minutes. Local airport times.
    • AC8807: SEA 2026-11-27 15:15:00 → YVR 2026-11-27 17:26:00; layover at YVR: 114 minutes.
    • AC860: YVR 2026-11-27 19:20:00 → LHR 2026-11-28 11:50:00.
  • British Airways BA49: LHR 2026-12-04 14:55:00 → SEA 2026-12-04 16:50:00; nonstop; 595 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $821.60

  • Alaska Airlines AS100: SEA 2026-11-20 18:45:00 → LHR 2026-11-21 12:20:00; nonstop; 575 minutes. Local airport times.
  • Alaska Airlines AS101: LHR 2026-11-23 14:45:00 → SEA 2026-11-23 17:00:00; nonstop; 615 minutes. Local airport times.

2026-11-20 · one way · $582.40

  • British Airways BA48: SEA 2026-11-20 18:45:00 → LHR 2026-11-21 12:10:00; nonstop; 565 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $887.40

  • British Airways BA48: SEA 2026-11-27 18:45:00 → LHR 2026-11-28 12:10:00; nonstop; 565 minutes. Local airport times.
  • British Airways BA49: LHR 2026-12-04 14:55:00 → SEA 2026-12-04 16:50:00; nonstop; 595 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $904.80

  • British Airways BA48: SEA 2026-11-20 18:45:00 → LHR 2026-11-21 12:10:00; nonstop; 565 minutes. Local airport times.
  • British Airways BA49: LHR 2026-11-23 14:55:00 → SEA 2026-11-23 16:50:00; nonstop; 595 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $904.80

  • British Airways BA52: SEA 2026-11-20 13:30:00 → LHR 2026-11-21 07:00:00; nonstop; 570 minutes. Local airport times.
  • British Airways BA49: LHR 2026-11-23 14:55:00 → SEA 2026-11-23 16:50:00; nonstop; 595 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $925.60

  • Delta Air Lines DL20: SEA 2026-11-20 16:50:00 → LHR 2026-11-21 10:40:00; nonstop; 590 minutes. Local airport times.
  • Delta Air Lines DL21: LHR 2026-11-23 12:20:00 → SEA 2026-11-23 14:45:00; nonstop; 625 minutes. Local airport times.

2026-11-20 · one way · $499.20

  • Alaska Airlines AS442 / BA66: SEA 2026-11-20 09:05:00 → LHR 2026-11-21 06:35:00; 1 stop(s) via PHL; 810 minutes. Local airport times.
    • AS442: SEA 2026-11-20 09:05:00 → PHL 2026-11-20 17:08:00; layover at PHL: 87 minutes.
    • BA66: PHL 2026-11-20 18:35:00 → LHR 2026-11-21 06:35:00.

2026-11-20 · one way · $499.20

  • Alaska Airlines AS460 / BA238: SEA 2026-11-20 21:20:00 → LHR 2026-11-21 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
    • AS460: SEA 2026-11-20 21:20:00 → BOS 2026-11-21 05:40:00; layover at BOS: 110 minutes.
    • BA238: BOS 2026-11-21 07:30:00 → LHR 2026-11-21 19:00:00.

2026-11-20 · one way · $499.20

  • Alaska Airlines AS385 / BA92: SEA 2026-11-20 08:31:00 → LHR 2026-11-21 05:50:00; 1 stop(s) via YYZ; 799 minutes. Local airport times.
    • AS385: SEA 2026-11-20 08:31:00 → YYZ 2026-11-20 16:05:00; layover at YYZ: 95 minutes.
    • BA92: YYZ 2026-11-20 17:40:00 → LHR 2026-11-21 05:50:00.

2026-11-20 → 2026-11-23 · $644.80

  • FI FI680 / FI450: SEA 2026-11-20 14:35:00 → LHR 2026-11-21 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
    • FI680: SEA 2026-11-20 14:35:00 → KEF 2026-11-21 06:15:00; layover at KEF: 80 minutes.
    • FI450: KEF 2026-11-21 07:35:00 → LHR 2026-11-21 10:50:00.
  • FI FI451 / FI681: LHR 2026-11-23 12:15:00 → SEA 2026-11-23 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
    • FI451: LHR 2026-11-23 12:15:00 → KEF 2026-11-23 15:30:00; layover at KEF: 90 minutes.
    • FI681: KEF 2026-11-23 17:00:00 → SEA 2026-11-23 17:00:00.

2026-11-27 → 2026-12-04 · $779.80

  • Alaska Airlines AS460 / BA238: SEA 2026-11-27 21:20:00 → LHR 2026-11-28 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
    • AS460: SEA 2026-11-27 21:20:00 → BOS 2026-11-28 05:40:00; layover at BOS: 110 minutes.
    • BA238: BOS 2026-11-28 07:30:00 → LHR 2026-11-28 19:00:00.
  • Alaska Airlines AS101: LHR 2026-12-04 14:45:00 → SEA 2026-12-04 17:00:00; nonstop; 615 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $779.80

  • Alaska Airlines AS385 / BA92: SEA 2026-11-27 08:31:00 → LHR 2026-11-28 05:50:00; 1 stop(s) via YYZ; 799 minutes. Local airport times.
    • AS385: SEA 2026-11-27 08:31:00 → YYZ 2026-11-27 16:05:00; layover at YYZ: 95 minutes.
    • BA92: YYZ 2026-11-27 17:40:00 → LHR 2026-11-28 05:50:00.
  • Alaska Airlines AS101: LHR 2026-12-04 14:45:00 → SEA 2026-12-04 17:00:00; nonstop; 615 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $779.80

  • Alaska Airlines AS442 / BA66: SEA 2026-11-27 09:05:00 → LHR 2026-11-28 06:35:00; 1 stop(s) via PHL; 810 minutes. Local airport times.
    • AS442: SEA 2026-11-27 09:05:00 → PHL 2026-11-27 17:08:00; layover at PHL: 87 minutes.
    • BA66: PHL 2026-11-27 18:35:00 → LHR 2026-11-28 06:35:00.
  • Alaska Airlines AS101: LHR 2026-12-04 14:45:00 → SEA 2026-12-04 17:00:00; nonstop; 615 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $795.60

  • Alaska Airlines AS442 / BA66: SEA 2026-11-20 09:05:00 → LHR 2026-11-21 06:35:00; 1 stop(s) via PHL; 810 minutes. Local airport times.
    • AS442: SEA 2026-11-20 09:05:00 → PHL 2026-11-20 17:08:00; layover at PHL: 87 minutes.
    • BA66: PHL 2026-11-20 18:35:00 → LHR 2026-11-21 06:35:00.
  • Alaska Airlines AS101: LHR 2026-11-23 14:45:00 → SEA 2026-11-23 17:00:00; nonstop; 615 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $795.60

  • Alaska Airlines AS460 / BA238: SEA 2026-11-20 21:20:00 → LHR 2026-11-21 19:00:00; 1 stop(s) via BOS; 820 minutes. Local airport times.
    • AS460: SEA 2026-11-20 21:20:00 → BOS 2026-11-21 05:40:00; layover at BOS: 110 minutes.
    • BA238: BOS 2026-11-21 07:30:00 → LHR 2026-11-21 19:00:00.
  • Alaska Airlines AS101: LHR 2026-11-23 14:45:00 → SEA 2026-11-23 17:00:00; nonstop; 615 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $795.60

  • Alaska Airlines AS385 / BA92: SEA 2026-11-20 08:31:00 → LHR 2026-11-21 05:50:00; 1 stop(s) via YYZ; 799 minutes. Local airport times.
    • AS385: SEA 2026-11-20 08:31:00 → YYZ 2026-11-20 16:05:00; layover at YYZ: 95 minutes.
    • BA92: YYZ 2026-11-20 17:40:00 → LHR 2026-11-21 05:50:00.
  • Alaska Airlines AS101: LHR 2026-11-23 14:45:00 → SEA 2026-11-23 17:00:00; nonstop; 615 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $842.40

  • Air France AF77 / AF1780: SEA 2026-11-20 16:05:00 → LHR 2026-11-21 13:45:00; 1 stop(s) via CDG; 820 minutes. Local airport times.
    • AF77: SEA 2026-11-20 16:05:00 → CDG 2026-11-21 10:50:00; layover at CDG: 145 minutes.
    • AF1780: CDG 2026-11-21 13:15:00 → LHR 2026-11-21 13:45:00.
  • Air France AF1381 / AF76: LHR 2026-11-23 06:20:00 → SEA 2026-11-23 13:50:00; 1 stop(s) via CDG; 930 minutes. Local airport times.
    • AF1381: LHR 2026-11-23 06:20:00 → CDG 2026-11-23 08:40:00; layover at CDG: 225 minutes.
    • AF76: CDG 2026-11-23 12:25:00 → SEA 2026-11-23 13:50:00.

2026-11-20 → 2026-11-23 · $847.60

  • Air Canada AC8807 / AC860: SEA 2026-11-20 15:15:00 → LHR 2026-11-21 11:50:00; 1 stop(s) via YVR; 755 minutes. Local airport times.
    • AC8807: SEA 2026-11-20 15:15:00 → YVR 2026-11-20 17:26:00; layover at YVR: 114 minutes.
    • AC860: YVR 2026-11-20 19:20:00 → LHR 2026-11-21 11:50:00.
  • British Airways BA49: LHR 2026-11-23 14:55:00 → SEA 2026-11-23 16:50:00; nonstop; 595 minutes. Local airport times.

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