Book United flights (UA)

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Top Flight Deals

Prices were available within the past 7 days and start at $49 for one-way flights and $97 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Oct 28 - Tue, Nov 4
LAX
Los Angeles
SFO
San Francisco
$97 Roundtrip, just found
$97
Roundtrip
just found
Select United flight, departing Tue, Oct 28 from Los Angeles to San Francisco, returning Tue, Nov 4, priced at $97 just found
United
Thu, Oct 16 - Sat, Oct 18
LAX
Los Angeles
LAS
Las Vegas
$97 Roundtrip, just found
$97
Roundtrip
just found
Select United flight, departing Thu, Oct 16 from Los Angeles to Las Vegas, returning Sat, Oct 18, priced at $97 just found
United
Wed, Dec 24 - Thu, Dec 25
LAX
Los Angeles
SFO
San Francisco
$107 Roundtrip, just found
$107
Roundtrip
just found
Select United flight, departing Wed, Dec 24 from Los Angeles to San Francisco, returning Thu, Dec 25, priced at $107 just found
United
Tue, Oct 28 - Tue, Nov 4
LAX
Los Angeles
SFO
San Francisco
$108 Roundtrip, just found
$108
Roundtrip
just found
Select United flight, departing Tue, Oct 28 from Los Angeles to San Francisco, returning Tue, Nov 4, priced at $108 just found
United
Tue, Jan 6 - Wed, Jan 7
LAX
Los Angeles
SFO
San Francisco
$110 Roundtrip, found 8 hours ago
$110
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Jan 6 from Los Angeles to San Francisco, returning Wed, Jan 7, priced at $110 found 8 hours ago

Trending United Flights

Prices were available within the past 7 days and start at $49 for one-way flights and $97 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Oct 26 - Sat, Nov 1
SFO
San Francisco
LAS
Las Vegas
$97 Roundtrip, just found
$97
Roundtrip
just found
Select United flight, departing Sun, Oct 26 from San Francisco to Las Vegas, returning Sat, Nov 1, priced at $97 just found
United
Thu, Oct 16 - Sat, Oct 18
LAX
Los Angeles
LAS
Las Vegas
$97 Roundtrip, just found
$97
Roundtrip
just found
Select United flight, departing Thu, Oct 16 from Los Angeles to Las Vegas, returning Sat, Oct 18, priced at $97 just found

Frequently asked questions

Can I fly from the US on United Airlines?
With your United Airlines flight booking, you can fly from major U.S. airports including:
  • New York (JFK, EWR)
  • Los Angeles (LAX)
  • Chicago O'Hare (ORD)
  • San Francisco (SFO)
Where does United Airlines fly to?
United Airlines serves over 350 destinations across six continents. Discover United Airlines deals to top cities like:
  • London (LHR)
  • Tokyo (NRT)
  • Frankfurt (FRA)
  • Paris (CDG)
  • Mexico City (MEX)
  • São Paulo (GRU)
  • Sydney (SYD)
  • Tel Aviv (TLV)
  • Delhi (DEL)
  • Amsterdam (AMS)
  • Toronto (YYZ)
  • Cancun (CUN)
  • Rome (FCO)
  • Zurich (ZRH)
  • Honolulu (HNL)
Can I earn United Airlines miles with Expedia?
Yes, you can earn MileagePlus® miles with your United Airlines booking through Expedia. Be sure to enter your MileagePlus number during checkout. If you're a One Key™ member, you'll also earn OneKeyCash™ on top of your miles.OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
How much is carry-on for United Airlines?
When you fly United Airlines, carry-on baggage allowance depends on your fare:
  • Basic Economy (Domestic): One personal item only (no full-size carry-on)
  • Basic Economy (International): One personal item and one carry-on (up to 22 lbs (10 kg))
  • Economy and higher fares: One carry-on and one personal item allowed at no extra cost
What size carry-on is allowed on United Airlines?
For your United Airlines flight booking, carry-on items must fit within these size limits:
  • One carry-on bag no more than 9 x 14 x 22 inches
  • One personal item, such as a small handbag or laptop case
Carry-on bags must fit in overhead bins or under the seat. Oversized bags may need to be checked at the gate for a fee.
How much are checked bags on United Airlines?
Checked baggage fees for your United Airlines booking vary by route and fare class:
  • Domestic Economy Class: No checked baggage allowance
  • Premium Economy Class: One checked bag included up to 50 lbs (23 kg)
  • International Economy and Premium Economy Class: One checked bag up to 50 lbs (23 kg)
  • International United First, Business, or Polaris Business Class: Two checked bags up to 70 lbs (32 kg)
Additional fees apply for excess weight or additional bags.
Do you have to pay for seats on United Airlines?
Seat selection with your United Airlines reservation depends on your fare type. Standard seat selection is included with most fares, except for Basic Economy. Advanced seat selection is available for purchase during or after booking, while extra legroom or exit row seats are offered for an additional fee. Passengers flying in Premium Plus, Business, or Polaris® cabins receive complimentary seat selection.
How far in advance can you check in with United Airlines?
For your United Airlines flight, online and mobile check-in opens 24 hours before departure via the United app or website. Airport counters generally open two to three hours before flight time.
What kind of airline is United Airlines?
United Airlines is a full-service US carrier offering domestic and international flights. It is a founding member of the Star Alliance network and operates one of the largest fleets in the world. United Airlines is known for its wide range of cabin options, frequent flyer benefits, and global connectivity.
Is United Airlines a good airline to fly with?
Yes, many travelers choose to fly United Airlines for its flexible fare options, extensive destinations, and onboard amenities. Premium passengers enjoy access to Star Alliance lounges and elevated service.
What type of planes does United Airlines fly?
United Airlines operates a large and diverse fleet that includes Boeing 737, 757, 767, 777, and 787 Dreamliner aircraft, as well as Airbus A319 and A320 models. These aircraft are equipped with amenities such as Wi-Fi, in-seat power, and seatback entertainment. United Airlines is also investing in fleet upgrades by introducing newer, more fuel-efficient aircraft.
Does United Airlines have First or Business Class?
Yes, your United Airlines ticket offers both Business Class and premium long-haul service under the Polaris® brand. Business Class includes wider seating, complimentary meals, and priority boarding. Polaris® provides an elevated experience with lie-flat seats, enhanced dining, lounge access, and premium amenities. United Airlines also offers Premium Plus—a cabin that sits between Economy and Business—featuring extra legroom and upgraded in-flight services.

Book with confidence

Book with confidence

United Flights on Expedia.com

Search Expedia for the very best selection of United flights to whatever destination you're headed. United and Expedia have teamed up to provide you with great discount airfares and flexible departure and arrival times to make your trip a truly comfortable, affordable, and memorable experience. Fly with United today to see the difference.

United is a valued partner of Expedia, and we work together to provide you with all the tools you need to book your next United flight. From last-minute flights to flights planned ahead, United has a huge inventory of cheap flights to help you save even more. Fly with style and comfort with United, and rest assured that all your flight needs are taken care of, making your travel experience as good as it can be. All United flights offer expansive routes to your destination and provide you with flexible departure and arrival times giving you more selection than ever before. And by booking with Expedia, you have access to online tools to help you plan the best trip, from fare alerts, to calendar tools and more; use these to help book the best United flight you can find. If you need additional assistance, Expedia Customer Service Representatives are available 24 hours a day to help you with any questions when booking your United flights. United and Expedia are here to ensure you travel with the confidence that you have the best flight at the very best price.

United Flights on Expedia.com

Travel information

Travel information

Airline Information

Airline Name
United
Airline Code
UA
Top Destination
Denver, Fort Lauderdale, New York
Loyalty Programme
MileagePlus
Partners and Alliances
Star Alliance
Headquarters
Willis Tower, Chicago
Airline Information

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.