Cheap flights from Portsmouth to Mississauga

View AU$171 flight on Mon, 25 Aug. 2025Opens in a new window

Popular airlines from Portsmouth to Mississauga

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Portsmouth (BOS) to Mississauga (YTO)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, 14 Oct. - Wed, 15 Oct.
BOS
Boston
YTZ
Toronto
AU$414 Return, found 2 days ago
AU$414
Return
found 2 days ago
Select Air Canada flight, departing Tue, 14 Oct. from Boston to Toronto, returning Wed, 15 Oct., priced at AU$414 found 2 days ago
Air Canada
Wed, 10 Sep. - Thu, 11 Sep.
BOS
Boston
YYZ
Toronto
AU$419 Return, found 4 hours ago
AU$419
Return
found 4 hours ago
Select Air Canada flight, departing Wed, 10 Sep. from Boston to Toronto, returning Thu, 11 Sep., priced at AU$419 found 4 hours ago
Porter Airlines
Tue, 14 Oct. - Wed, 15 Oct.
BOS
Boston
YTZ
Toronto
AU$421 Return, found 2 days ago
AU$421
Return
found 2 days ago
Select Porter Airlines flight, departing Tue, 14 Oct. from Boston to Toronto, returning Wed, 15 Oct., priced at AU$421 found 2 days ago
United
Thu, 16 Oct. - Sun, 19 Oct.
BOS
Boston
YYZ
Toronto
AU$427 Return, found 2 days ago
AU$427
Return
found 2 days ago
Select United flight, departing Thu, 16 Oct. from Boston to Toronto, returning Sun, 19 Oct., priced at AU$427 found 2 days ago
Delta
Wed, 10 Sep. - Thu, 11 Sep.
BOS
Boston
YYZ
Toronto
AU$461 Return, found 4 hours ago
AU$461
Return
found 4 hours ago
Select Delta flight, departing Wed, 10 Sep. from Boston to Toronto, returning Thu, 11 Sep., priced at AU$461 found 4 hours ago
American Airlines
Mon, 1 Sep. - Mon, 8 Sep.
MHT
Manchester
YYZ
Toronto
AU$904 Return, found 6 days ago
AU$904
Return
found 6 days ago
Select American Airlines flight, departing Mon, 1 Sep. from Manchester to Toronto, returning Mon, 8 Sep., priced at AU$904 found 6 days ago

Find the cheapest month to fly from Boston (BOS) to Toronto (YYZ)

April is typically the cheapest month to fly

From AU$322 - AU$607 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.