British Airways Flight BA48 Deals & Information (2025/2026)

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British Airways Flight 48 Route Deals From $414

The cheapest prices found with in the last 7 days for return flights were $515 and $414 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Aug 24 - Mon, Sep 1
SEA
Seattle - Tacoma Intl.
LHR
Heathrow
$515 Roundtrip, found 4 hours ago
$515
Roundtrip
found 4 hours ago
Select British Airways flight, departing Sun, Aug 24 from Seattle - Tacoma Intl. to Heathrow, returning Mon, Sep 1, priced at $515 found 4 hours ago
Tue, Dec 2 - Tue, Dec 9
SEA
Seattle - Tacoma Intl.
LHR
Heathrow
$515 Roundtrip, found 1 day ago
$515
Roundtrip
found 1 day ago
Select British Airways flight, departing Tue, Dec 2 from Seattle - Tacoma Intl. to Heathrow, returning Tue, Dec 9, priced at $515 found 1 day ago
Wed, Sep 24 - Wed, Oct 1
SEA
Seattle - Tacoma Intl.
LHR
Heathrow
$516 Roundtrip, just found
$516
Roundtrip
just found
Select British Airways flight, departing Wed, Sep 24 from Seattle - Tacoma Intl. to Heathrow, returning Wed, Oct 1, priced at $516 just found
Sun, Aug 24 - Mon, Sep 1
SEA
Seattle - Tacoma Intl.
LHR
Heathrow
$519 Roundtrip, found 4 hours ago
$519
Roundtrip
found 4 hours ago
Select British Airways flight, departing Sun, Aug 24 from Seattle - Tacoma Intl. to Heathrow, returning Mon, Sep 1, priced at $519 found 4 hours ago

Frequently asked questions

What route does flight number BA48 take?
Flight number BA48 operates directly from SEA to Heathrow Airport. During this journey, you can expect to be in the air for approximately 9 hours and 20 minutes. It's wise to book ahead to lock in your favorite seat.
What kind of plane is on flight number BA48?
The Boeing 787-10 is the type of plane that's generally used for flight number BA48. Usually, this flight departs from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) and comes in to land at Heathrow Airport.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your BA48 flight with Travelocity, please visit our Customer Service Portal.