Seattle (SEA) to London (LHR), Dec 16, 2026: round trips from $729, one way from $390

Seattle (SEA) to London (LHR), Dec 16, 2026: round trips from $729, one way from $390 on Axel, checked Oct 29, 2026. Lowest published fares: $729 round trip, Axel-exclusive, FI, 1 stop, Dec 16–18, 2026; $390 one way, Axel-exclusive, FI, 1 stop, Dec 16, 2026; 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown.

Date links open published trip details for exploration. Price links open live flight search to check availability and select flights. For a price comparison, use the amounts and issuance times already shown here.

Hotels in London for these trips

Hotels: under a trip, hotels in London for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in London for these nights (Dec 16–18, 2026 · 2 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $232 total · 4★ Aparthotel Adagio London City East, $459 total · 5★ Vintry & Mercer, $807 total
• Hotels in London for these nights (Dec 16–19, 2026 · 3 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $366 total · 4★ Aparthotel Adagio London City East, $688 total · 5★ Vintry & Mercer, $1,200 total
• Hotels in London for these nights (Dec 16–20, 2026 · 4 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $575 total · 4★ Aparthotel Adagio London City East, $1,067 total · 5★ Royal Lancaster London, $1,604 total
• Hotels in London for these nights (Dec 16–21, 2026 · 5 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $687 total · 4★ Aparthotel Adagio London City East, $1,260 total · 5★ Royal Lancaster London, $1,976 total
• Hotels in London for these nights (Dec 16–22, 2026 · 6 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $803 total · 4★ Apex City of London Hotel, $1,569 total · 5★ Vintry & Mercer, $2,336 total
• Hotels in London for these nights (Dec 16–23, 2026 · 7 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $942 total · 4★ Aparthotel Adagio London City East, $1,788 total · 5★ Vintry & Mercer, $2,694 total
• Hotels in London for these nights (Dec 16–24, 2026 · 8 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $1,051 total · 4★ Aparthotel Adagio London City East, $1,974 total · 5★ Vintry & Mercer, $3,033 total
• Hotels in London for these nights (Dec 16–25, 2026 · 9 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $1,165 total · 4★ Aparthotel Adagio London City East, $2,159 total · 5★ Vintry & Mercer, $3,372 total
• Hotels in London for these nights (Dec 16–26, 2026 · 10 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $1,286 total · 4★ Aparthotel Adagio London City East, $2,335 total · 5★ Vintry & Mercer, $3,681 total
• Hotels in London for these nights (Dec 16–27, 2026 · 11 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $1,428 total · 4★ Aparthotel Adagio London City East, $2,579 total · 5★ Vintry & Mercer, $4,022 total
• Hotels in London for these nights (Dec 16–28, 2026 · 12 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $1,571 total · 4★ Aparthotel Adagio London City East, $2,795 total · 5★ Vintry & Mercer, $4,337 total
• Hotels in London for these nights (Dec 16–29, 2026 · 13 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $1,744 total · 4★ Aparthotel Adagio London City East, $3,093 total · 5★ Vintry & Mercer, $4,753 total
• Hotels in London for these nights (Dec 16–30, 2026 · 14 nights · 2 adults, 1 room): 3★ Point A Kensington Olympia, $1,948 total · 4★ Aparthotel Adagio London City East, $3,498 total · 5★ Vintry & Mercer, $5,218 total

All hotels in London

Route overview: Seattle to London (LHR) flight deals

2026-12-16 · one way · Axel-exclusive $390.00

• FI FI680 / FI450: SEA 2026-12-16 14:35:00 → LHR 2026-12-17 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
  • FI680: SEA 2026-12-16 14:35:00 → KEF 2026-12-17 06:15:00; layover at KEF: 80 minutes.
  • FI450: KEF 2026-12-17 07:35:00 → LHR 2026-12-17 10:50:00.

2026-12-16 · one way · Axel-exclusive $560.00

• British Airways BA48: SEA 2026-12-16 18:45:00 → LHR 2026-12-17 12:10:00; nonstop; 565 minutes. Local airport times.

2026-12-16 → 2026-12-18 · Axel-exclusive $728.50

• FI FI680 / FI450: SEA 2026-12-16 14:35:00 → LHR 2026-12-17 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
  • FI680: SEA 2026-12-16 14:35:00 → KEF 2026-12-17 06:15:00; layover at KEF: 80 minutes.
  • FI450: KEF 2026-12-17 07:35:00 → LHR 2026-12-17 10:50:00.
• FI FI451 / FI681: LHR 2026-12-18 12:15:00 → SEA 2026-12-18 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
  • FI451: LHR 2026-12-18 12:15:00 → KEF 2026-12-18 15:30:00; layover at KEF: 90 minutes.
  • FI681: KEF 2026-12-18 17:00:00 → SEA 2026-12-18 17:00:00.

2026-12-16 → 2026-12-18 · Axel-exclusive $1022.25

• British Airways BA48: SEA 2026-12-16 18:45:00 → LHR 2026-12-17 12:10:00; nonstop; 565 minutes. Local airport times.
• British Airways BA49: LHR 2026-12-18 14:55:00 → SEA 2026-12-18 16:50:00; nonstop; 595 minutes. Local airport times.

2026-12-16 → 2026-12-19 · Axel-exclusive $728.50

• FI FI680 / FI450: SEA 2026-12-16 14:35:00 → LHR 2026-12-17 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
  • FI680: SEA 2026-12-16 14:35:00 → KEF 2026-12-17 06:15:00; layover at KEF: 80 minutes.
  • FI450: KEF 2026-12-17 07:35:00 → LHR 2026-12-17 10:50:00.
• FI FI451 / FI681: LHR 2026-12-19 12:15:00 → SEA 2026-12-19 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
  • FI451: LHR 2026-12-19 12:15:00 → KEF 2026-12-19 15:30:00; layover at KEF: 90 minutes.
  • FI681: KEF 2026-12-19 17:00:00 → SEA 2026-12-19 17:00:00.

2026-12-16 → 2026-12-19 · Axel-exclusive $1022.25

• British Airways BA48: SEA 2026-12-16 18:45:00 → LHR 2026-12-17 12:10:00; nonstop; 565 minutes. Local airport times.
• British Airways BA53: LHR 2026-12-19 09:25:00 → SEA 2026-12-19 11:25:00; nonstop; 600 minutes. Local airport times.

2026-12-16 → 2026-12-20 · Axel-exclusive $728.50

• FI FI680 / FI450: SEA 2026-12-16 14:35:00 → LHR 2026-12-17 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
  • FI680: SEA 2026-12-16 14:35:00 → KEF 2026-12-17 06:15:00; layover at KEF: 80 minutes.
  • FI450: KEF 2026-12-17 07:35:00 → LHR 2026-12-17 10:50:00.
• FI FI451 / FI681: LHR 2026-12-20 12:15:00 → SEA 2026-12-20 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
  • FI451: LHR 2026-12-20 12:15:00 → KEF 2026-12-20 15:30:00; layover at KEF: 90 minutes.
  • FI681: KEF 2026-12-20 17:00:00 → SEA 2026-12-20 17:00:00.

2026-12-16 → 2026-12-20 · Axel-exclusive $1022.25

• British Airways BA48: SEA 2026-12-16 18:45:00 → LHR 2026-12-17 12:10:00; nonstop; 565 minutes. Local airport times.
• British Airways BA49: LHR 2026-12-20 14:55:00 → SEA 2026-12-20 16:50:00; nonstop; 595 minutes. Local airport times.

2026-12-16 → 2026-12-21 · Axel-exclusive $728.50

• FI FI680 / FI450: SEA 2026-12-16 14:35:00 → LHR 2026-12-17 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
  • FI680: SEA 2026-12-16 14:35:00 → KEF 2026-12-17 06:15:00; layover at KEF: 80 minutes.
  • FI450: KEF 2026-12-17 07:35:00 → LHR 2026-12-17 10:50:00.
• FI FI451 / FI681: LHR 2026-12-21 12:15:00 → SEA 2026-12-21 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
  • FI451: LHR 2026-12-21 12:15:00 → KEF 2026-12-21 15:30:00; layover at KEF: 90 minutes.
  • FI681: KEF 2026-12-21 17:00:00 → SEA 2026-12-21 17:00:00.

2026-12-16 → 2026-12-21 · Axel-exclusive $1022.25

• British Airways BA48: SEA 2026-12-16 18:45:00 → LHR 2026-12-17 12:10:00; nonstop; 565 minutes. Local airport times.
• British Airways BA49: LHR 2026-12-21 14:55:00 → SEA 2026-12-21 16:50:00; nonstop; 595 minutes. Local airport times.

2026-12-16 → 2026-12-22 · Axel-exclusive $728.50

• FI FI680 / FI450: SEA 2026-12-16 14:35:00 → LHR 2026-12-17 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
  • FI680: SEA 2026-12-16 14:35:00 → KEF 2026-12-17 06:15:00; layover at KEF: 80 minutes.
  • FI450: KEF 2026-12-17 07:35:00 → LHR 2026-12-17 10:50:00.
• FI FI451 / FI681: LHR 2026-12-22 12:15:00 → SEA 2026-12-22 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
  • FI451: LHR 2026-12-22 12:15:00 → KEF 2026-12-22 15:30:00; layover at KEF: 90 minutes.
  • FI681: KEF 2026-12-22 17:00:00 → SEA 2026-12-22 17:00:00.

2026-12-16 → 2026-12-22 · Axel-exclusive $1022.25

• British Airways BA48: SEA 2026-12-16 18:45:00 → LHR 2026-12-17 12:10:00; nonstop; 565 minutes. Local airport times.
• British Airways BA53: LHR 2026-12-22 09:25:00 → SEA 2026-12-22 11:25:00; nonstop; 600 minutes. Local airport times.

2026-12-16 → 2026-12-24 · Axel-exclusive $728.50

• FI FI680 / FI450: SEA 2026-12-16 14:35:00 → LHR 2026-12-17 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
  • FI680: SEA 2026-12-16 14:35:00 → KEF 2026-12-17 06:15:00; layover at KEF: 80 minutes.
  • FI450: KEF 2026-12-17 07:35:00 → LHR 2026-12-17 10:50:00.
• FI FI451 / FI681: LHR 2026-12-24 12:15:00 → SEA 2026-12-24 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
  • FI451: LHR 2026-12-24 12:15:00 → KEF 2026-12-24 15:30:00; layover at KEF: 90 minutes.
  • FI681: KEF 2026-12-24 17:00:00 → SEA 2026-12-24 17:00:00.

2026-12-16 → 2026-12-24 · Axel-exclusive $1022.25

• British Airways BA48: SEA 2026-12-16 18:45:00 → LHR 2026-12-17 12:10:00; nonstop; 565 minutes. Local airport times.
• British Airways BA53: LHR 2026-12-24 09:25:00 → SEA 2026-12-24 11:25:00; nonstop; 600 minutes. Local airport times.

2026-12-16 → 2026-12-25 · Axel-exclusive $728.50

• FI FI680 / FI450: SEA 2026-12-16 14:35:00 → LHR 2026-12-17 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
  • FI680: SEA 2026-12-16 14:35:00 → KEF 2026-12-17 06:15:00; layover at KEF: 80 minutes.
  • FI450: KEF 2026-12-17 07:35:00 → LHR 2026-12-17 10:50:00.
• FI FI451 / FI681: LHR 2026-12-25 12:15:00 → SEA 2026-12-25 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
  • FI451: LHR 2026-12-25 12:15:00 → KEF 2026-12-25 15:30:00; layover at KEF: 90 minutes.
  • FI681: KEF 2026-12-25 17:00:00 → SEA 2026-12-25 17:00:00.

2026-12-16 → 2026-12-25 · Axel-exclusive $1022.25

• British Airways BA48: SEA 2026-12-16 18:45:00 → LHR 2026-12-17 12:10:00; nonstop; 565 minutes. Local airport times.
• British Airways BA49: LHR 2026-12-25 14:55:00 → SEA 2026-12-25 16:50:00; nonstop; 595 minutes. Local airport times.

2026-12-16 → 2026-12-26 · Axel-exclusive $728.50

• FI FI680 / FI450: SEA 2026-12-16 14:35:00 → LHR 2026-12-17 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
  • FI680: SEA 2026-12-16 14:35:00 → KEF 2026-12-17 06:15:00; layover at KEF: 80 minutes.
  • FI450: KEF 2026-12-17 07:35:00 → LHR 2026-12-17 10:50:00.
• FI FI451 / FI681: LHR 2026-12-26 12:15:00 → SEA 2026-12-26 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
  • FI451: LHR 2026-12-26 12:15:00 → KEF 2026-12-26 15:30:00; layover at KEF: 90 minutes.
  • FI681: KEF 2026-12-26 17:00:00 → SEA 2026-12-26 17:00:00.

2026-12-16 → 2026-12-26 · Axel-exclusive $1022.25

• British Airways BA48: SEA 2026-12-16 18:45:00 → LHR 2026-12-17 12:10:00; nonstop; 565 minutes. Local airport times.
• British Airways BA53: LHR 2026-12-26 09:25:00 → SEA 2026-12-26 11:25:00; nonstop; 600 minutes. Local airport times.

2026-12-16 → 2026-12-27 · Axel-exclusive $728.50

• FI FI680 / FI450: SEA 2026-12-16 14:35:00 → LHR 2026-12-17 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
  • FI680: SEA 2026-12-16 14:35:00 → KEF 2026-12-17 06:15:00; layover at KEF: 80 minutes.
  • FI450: KEF 2026-12-17 07:35:00 → LHR 2026-12-17 10:50:00.
• FI FI451 / FI681: LHR 2026-12-27 12:15:00 → SEA 2026-12-27 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
  • FI451: LHR 2026-12-27 12:15:00 → KEF 2026-12-27 15:30:00; layover at KEF: 90 minutes.
  • FI681: KEF 2026-12-27 17:00:00 → SEA 2026-12-27 17:00:00.

2026-12-16 → 2026-12-27 · Axel-exclusive $1022.25

• British Airways BA48: SEA 2026-12-16 18:45:00 → LHR 2026-12-17 12:10:00; nonstop; 565 minutes. Local airport times.
• British Airways BA49: LHR 2026-12-27 14:55:00 → SEA 2026-12-27 16:50:00; nonstop; 595 minutes. Local airport times.

2026-12-16 → 2026-12-28 · Axel-exclusive $728.50

• FI FI680 / FI450: SEA 2026-12-16 14:35:00 → LHR 2026-12-17 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
  • FI680: SEA 2026-12-16 14:35:00 → KEF 2026-12-17 06:15:00; layover at KEF: 80 minutes.
  • FI450: KEF 2026-12-17 07:35:00 → LHR 2026-12-17 10:50:00.
• FI FI451 / FI681: LHR 2026-12-28 12:15:00 → SEA 2026-12-28 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
  • FI451: LHR 2026-12-28 12:15:00 → KEF 2026-12-28 15:30:00; layover at KEF: 90 minutes.
  • FI681: KEF 2026-12-28 17:00:00 → SEA 2026-12-28 17:00:00.

2026-12-16 → 2026-12-28 · Axel-exclusive $1022.25

• British Airways BA48: SEA 2026-12-16 18:45:00 → LHR 2026-12-17 12:10:00; nonstop; 565 minutes. Local airport times.
• British Airways BA49: LHR 2026-12-28 14:55:00 → SEA 2026-12-28 16:50:00; nonstop; 595 minutes. Local airport times.

2026-12-16 → 2026-12-30 · Axel-exclusive $728.50

• FI FI680 / FI450: SEA 2026-12-16 14:35:00 → LHR 2026-12-17 10:50:00; 1 stop(s) via KEF; 735 minutes. Local airport times.
  • FI680: SEA 2026-12-16 14:35:00 → KEF 2026-12-17 06:15:00; layover at KEF: 80 minutes.
  • FI450: KEF 2026-12-17 07:35:00 → LHR 2026-12-17 10:50:00.
• FI FI451 / FI681: LHR 2026-12-30 12:15:00 → SEA 2026-12-30 17:00:00; 1 stop(s) via KEF; 765 minutes. Local airport times.
  • FI451: LHR 2026-12-30 12:15:00 → KEF 2026-12-30 15:30:00; layover at KEF: 90 minutes.
  • FI681: KEF 2026-12-30 17:00:00 → SEA 2026-12-30 17:00:00.

2026-12-16 → 2026-12-30 · Axel-exclusive $1022.25

• British Airways BA48: SEA 2026-12-16 18:45:00 → LHR 2026-12-17 12:10:00; nonstop; 565 minutes. Local airport times.
• British Airways BA49: LHR 2026-12-30 14:55:00 → SEA 2026-12-30 16:50:00; nonstop; 595 minutes. Local airport times.

Explore this route

• All dates for this route
• Dec 15, 2026 · Return options
• Dec 17, 2026 · Return options
• Hotels in London with Axel

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• This page: Seattle (SEA) to London (LHR) · Dec 16, 2026 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in London for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
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