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 $766 and $337 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Nov 29 - Tue, Dec 8
LAS
Harry Reid Intl.
LHR
Heathrow
$766 Roundtrip, found 6 hours ago
$766
Roundtrip
found 6 hours ago
Select British Airways flight, departing Sun, Nov 29 from Harry Reid Intl. to Heathrow, returning Tue, Dec 8, priced at $766 found 6 hours ago
Sun, Sep 27 - Tue, Oct 13
LAS
Harry Reid Intl.
LHR
Heathrow
$771 Roundtrip, found 1 hour ago
$771
Roundtrip
found 1 hour ago
Select British Airways flight, departing Sun, Sep 27 from Harry Reid Intl. to Heathrow, returning Tue, Oct 13, priced at $771 found 1 hour ago
Wed, Apr 28 - Fri, May 7
LAS
Harry Reid Intl.
LHR
Heathrow
$775 Roundtrip, found 2 hours ago
$775
Roundtrip
found 2 hours ago
Select British Airways flight, departing Wed, Apr 28 from Harry Reid Intl. to Heathrow, returning Fri, May 7, priced at $775 found 2 hours ago
Sun, Dec 6 - Tue, Dec 15
LAS
Harry Reid Intl.
LHR
Heathrow
$781 Roundtrip, found 1 hour ago
$781
Roundtrip
found 1 hour ago
Select British Airways flight, departing Sun, Dec 6 from Harry Reid Intl. to Heathrow, returning Tue, Dec 15, priced at $781 found 1 hour ago
Tue, Apr 20 - Tue, Apr 27
LAS
Harry Reid Intl.
LHR
Heathrow
$785 Roundtrip, found 2 hours ago
$785
Roundtrip
found 2 hours ago
Select British Airways flight, departing Tue, Apr 20 from Harry Reid Intl. to Heathrow, returning Tue, Apr 27, priced at $785 found 2 hours ago
Tue, Nov 10 - Sun, Nov 15
LAS
Harry Reid Intl.
LHR
Heathrow
$826 Roundtrip, just found
$826
Roundtrip
just found
Select British Airways flight, departing Tue, Nov 10 from Harry Reid Intl. to Heathrow, returning Sun, Nov 15, priced at $826 just found
Tue, Nov 10 - Sun, Nov 15
LAS
Harry Reid Intl.
LHR
Heathrow
$831 Roundtrip, just found
$831
Roundtrip
just found
Select British Airways flight, departing Tue, Nov 10 from Harry Reid Intl. to Heathrow, returning Sun, Nov 15, priced at $831 just found

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.