Flights from Canada to the United States from $ 213*

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Changed bag rules and optional services         Cruise Packages

Best prices for United flights from Canada to United States

$
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  • Toronto (YYZ)to

    Chicago (ORD)
    03/31/26 - 04/02/26
    from
    $ 798
    Viewed: 1 day ago
    Roundtrip
    Economy

    Vancouver (YVR)to

    Denver (DEN)
    03/31/26 - 04/04/26
    from
    $ 923
    Viewed: 1 day ago
    Roundtrip
    Economy

    Toronto (YYZ)to

    Newark/New York (EWR)
    04/11/26 - 04/13/26
    from
    $ 235
    Viewed: 4 hours ago
    Roundtrip
    Economy

    Toronto (YYZ)to

    Los Angeles (LAX)
    04/22/26 - 04/27/26
    from
    $ 329
    Viewed: 3 hours ago
    Roundtrip
    Economy

  • Calgary (YYC)to

    Houston (IAH)
    04/19/26 - 04/23/26
    from
    $ 506
    Viewed: 1 day ago
    Roundtrip
    Economy

    Calgary (YYC)to

    San Francisco (SFO)
    04/14/26 - 04/19/26
    from
    $ 378
    Viewed: 1 day ago
    Roundtrip
    Economy

    Vancouver (YVR)to

    Houston (IAH)
    04/05/26 - 04/09/26
    from
    $ 767
    Viewed: 21 hours ago
    Roundtrip
    Economy

    Montreal (YUL)to

    San Francisco (SFO)
    04/01/26 - 04/14/26
    from
    $ 752
    Viewed: 1 day ago
    Roundtrip
    Economy

  • Calgary (YYC)to

    Denver (DEN)
    04/19/26 - 04/23/26
    from
    $ 450
    Viewed: 16 hours ago
    Roundtrip
    Economy

    Toronto (YYZ)to

    Denver (DEN)
    04/20/26 - 04/24/26
    from
    $ 465
    Viewed: 5 hours ago
    Roundtrip
    Economy

    Edmonton (YEG)to

    Las Vegas (LAS)
    04/18/26 - 04/25/26
    from
    $ 510
    Viewed: 1 day ago
    Roundtrip
    Economy

    Toronto (YYZ)to

    Washington, D.C. (IAD)
    04/26/26 - 04/29/26
    from
    $ 330
    Viewed: 14 hours ago
    Roundtrip
    Economy

  • Calgary (YYC)to

    Chicago (ORD)
    04/19/26 - 04/24/26
    from
    $ 653
    Viewed: 5 hours ago
    Roundtrip
    Economy

    Montreal (YUL)to

    Newark/New York (EWR)
    04/03/26 - 04/06/26
    from
    $ 467
    Viewed: 1 day ago
    Roundtrip
    Economy

    Calgary (YYC)to

    Los Angeles (LAX)
    04/24/26 - 04/26/26
    from
    $ 392
    Viewed: 23 hours ago
    Roundtrip
    Economy

    Toronto (YYZ)to

    Las Vegas (LAS)
    04/21/26 - 04/25/26
    from
    $ 393
    Viewed: 22 hours ago
    Roundtrip
    Economy

*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

Best business class fares from Canada to the United States

$

Vancouver (YVR)to

San Francisco (SFO)
06/13/26 - 06/13/26

Roundtrip

Business

from
$ 795
Viewed: 22 hours ago

Vancouver (YVR)to

Los Angeles (LAX)
05/05/26 - 05/10/26

Roundtrip

Business

from
$ 635
Viewed: 2 hours ago

Toronto (YYZ)to

San Francisco (SFO)
04/12/26 - 04/16/26

Roundtrip

Business

from
$ 1,793
Viewed: 1 day ago

Toronto (YYZ)to

Houston (IAH)
05/07/26 - 05/17/26

Roundtrip

Business

from
$ 1,344
Viewed: 19 hours ago

Toronto (YYZ)to

Chicago (ORD)
05/17/26 - 05/26/26

Roundtrip

Business

from
$ 662
Viewed: 1 day ago

Toronto (YYZ)to

Newark/New York (EWR)
04/11/26 - 04/13/26

Roundtrip

Business

from
$ 596
Viewed: 4 hours ago

Vancouver (YVR)to

Denver (DEN)
05/19/26 - 05/21/26

Roundtrip

Business

from
$ 880
Viewed: 1 day ago

Vancouver (YVR)to

Newark/New York (EWR)
06/11/26 - 06/17/26

Roundtrip

Business

from
$ 1,711
Viewed: 1 day ago

*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

Explore more United flights from Canada to the United States