British Airways Flight 274 Deals & Information (2026/2027)

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British Airways Flight 274 Route Deals From $337

The cheapest prices found with in the last 7 days for return flights were $861 and $337 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Nov 15 - Sat, Nov 21
LAS
Harry Reid Intl.
LHR
Heathrow
$861 Roundtrip, found 5 days ago
$861
Roundtrip
found 5 days ago
Select British Airways flight, departing Sun, Nov 15 from Harry Reid Intl. to Heathrow, returning Sat, Nov 21, priced at $861 found 5 days ago
Sun, Nov 29 - Fri, Dec 4
LAS
Harry Reid Intl.
LHR
Heathrow
$863 Roundtrip, found 1 day ago
$863
Roundtrip
found 1 day ago
Select British Airways flight, departing Sun, Nov 29 from Harry Reid Intl. to Heathrow, returning Fri, Dec 4, priced at $863 found 1 day ago
Sun, Nov 15 - Sat, Nov 21
LAS
Harry Reid Intl.
LHR
Heathrow
$865 Roundtrip, found 5 days ago
$865
Roundtrip
found 5 days ago
Select British Airways flight, departing Sun, Nov 15 from Harry Reid Intl. to Heathrow, returning Sat, Nov 21, priced at $865 found 5 days ago
Wed, Nov 25 - Mon, Nov 30
LAS
Harry Reid Intl.
LHR
Heathrow
$867 Roundtrip, just found
$867
Roundtrip
just found
Select British Airways flight, departing Wed, Nov 25 from Harry Reid Intl. to Heathrow, returning Mon, Nov 30, priced at $867 just found
Wed, Feb 17 - Sat, Feb 27
LAS
Harry Reid Intl.
LHR
Heathrow
$872 Roundtrip, found 2 hours ago
$872
Roundtrip
found 2 hours ago
Select British Airways flight, departing Wed, Feb 17 from Harry Reid Intl. to Heathrow, returning Sat, Feb 27, priced at $872 found 2 hours ago
Mon, Nov 30 - Mon, Dec 7
LAS
Harry Reid Intl.
LHR
Heathrow
$873 Roundtrip, found 2 days ago
$873
Roundtrip
found 2 days ago
Select British Airways flight, departing Mon, Nov 30 from Harry Reid Intl. to Heathrow, returning Mon, Dec 7, priced at $873 found 2 days ago
Wed, Feb 17 - Sat, Feb 27
LAS
Harry Reid Intl.
LHR
Heathrow
$877 Roundtrip, found 2 hours ago
$877
Roundtrip
found 2 hours ago
Select British Airways flight, departing Wed, Feb 17 from Harry Reid Intl. to Heathrow, returning Sat, Feb 27, priced at $877 found 2 hours ago

Frequently asked questions

What route does flight number BA274 take?
BA274 jets between McCarran Intl. Airport (LAS) and LHR and is a direct flight. This service generally takes 10 hours and 15 minutes.
How often is BA274 on time?
People flying on British Airways flight number BA274 should be aware that 70% of these flights take off on schedule. If you encounter a delay, the typical wait time is approximately 36 minutes. This service has a 0.45-star rating.
What terminal does BA274 fly out of?
Flights between Las Vegas, NV Airport (LAS-McCarran Intl.) and London Airport (LHR-Heathrow) are served by BA274, and passengers who travel on this route usually take off from Terminal 3.
What kind of plane is on flight number BA274?
You're likely to find yourself traveling aboard a Boeing 777 if you're on flight number BA274. This flight almost always leaves from McCarran Intl. Airport (LAS) and touches down at London Airport (LHR-Heathrow).
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 BA274 flight with Travelocity, please visit our Customer Service Portal.