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 $851 and $337 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Dec 1 - Thu, Dec 10
LAS
Harry Reid Intl.
LHR
Heathrow
$851 Roundtrip, found 4 days ago
$851
Roundtrip
found 4 days ago
Select British Airways flight, departing Tue, Dec 1 from Harry Reid Intl. to Heathrow, returning Thu, Dec 10, priced at $851 found 4 days ago
Tue, Dec 1 - Fri, Dec 11
LAS
Harry Reid Intl.
LHR
Heathrow
$856 Roundtrip, found 9 hours ago
$856
Roundtrip
found 9 hours ago
Select British Airways flight, departing Tue, Dec 1 from Harry Reid Intl. to Heathrow, returning Fri, Dec 11, priced at $856 found 9 hours ago
Wed, Nov 18 - Sun, Nov 22
LAS
Harry Reid Intl.
LHR
Heathrow
$859 Roundtrip, found 2 days ago
$859
Roundtrip
found 2 days ago
Select British Airways flight, departing Wed, Nov 18 from Harry Reid Intl. to Heathrow, returning Sun, Nov 22, priced at $859 found 2 days ago
Tue, Dec 1 - Thu, Dec 10
LAS
Harry Reid Intl.
LHR
Heathrow
$861 Roundtrip, found 4 days ago
$861
Roundtrip
found 4 days ago
Select British Airways flight, departing Tue, Dec 1 from Harry Reid Intl. to Heathrow, returning Thu, Dec 10, priced at $861 found 4 days 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.