United Flight UA3509 Deals & Information (2025/2026)

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United Flight 3509 Route Deals From $295

The cheapest prices found with in the last 7 days for return flights were $381 and $295 for one-way flights to Macdonald-Cartier Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 18 - Wed, Oct 8
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$381 Roundtrip, found 6 days ago
$381
Roundtrip
found 6 days ago
Select United flight, departing Thu, Sep 18 from O'Hare Intl. to Macdonald-Cartier Intl., returning Wed, Oct 8, priced at $381 found 6 days ago
Tue, Sep 16 - Thu, Sep 25
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$400 Roundtrip, found 1 day ago
$400
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 16 from O'Hare Intl. to Macdonald-Cartier Intl., returning Thu, Sep 25, priced at $400 found 1 day ago
Thu, Sep 18 - Wed, Oct 8
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$404 Roundtrip, found 6 days ago
$404
Roundtrip
found 6 days ago
Select United flight, departing Thu, Sep 18 from O'Hare Intl. to Macdonald-Cartier Intl., returning Wed, Oct 8, priced at $404 found 6 days ago
Thu, Sep 18 - Fri, Sep 19
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$406 Roundtrip, found 5 days ago
$406
Roundtrip
found 5 days ago
Select United flight, departing Thu, Sep 18 from O'Hare Intl. to Macdonald-Cartier Intl., returning Fri, Sep 19, priced at $406 found 5 days ago
Tue, Sep 16 - Thu, Sep 25
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$410 Roundtrip, found 1 day ago
$410
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 16 from O'Hare Intl. to Macdonald-Cartier Intl., returning Thu, Sep 25, priced at $410 found 1 day ago
Thu, Sep 18 - Wed, Oct 8
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$413 Roundtrip, found 6 days ago
$413
Roundtrip
found 6 days ago
Select United flight, departing Thu, Sep 18 from O'Hare Intl. to Macdonald-Cartier Intl., returning Wed, Oct 8, priced at $413 found 6 days ago
Tue, Sep 16 - Thu, Sep 25
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$416 Roundtrip, found 1 day ago
$416
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 16 from O'Hare Intl. to Macdonald-Cartier Intl., returning Thu, Sep 25, priced at $416 found 1 day ago
Thu, Sep 18 - Wed, Oct 8
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$420 Roundtrip, found 6 days ago
$420
Roundtrip
found 6 days ago
Select United flight, departing Thu, Sep 18 from O'Hare Intl. to Macdonald-Cartier Intl., returning Wed, Oct 8, priced at $420 found 6 days ago
Mon, Sep 22 - Thu, Sep 25
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$421 Roundtrip, found 2 days ago
$421
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 22 from O'Hare Intl. to Macdonald-Cartier Intl., returning Thu, Sep 25, priced at $421 found 2 days ago
Thu, Sep 18 - Fri, Sep 19
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$421 Roundtrip, found 5 days ago
$421
Roundtrip
found 5 days ago
Select United flight, departing Thu, Sep 18 from O'Hare Intl. to Macdonald-Cartier Intl., returning Fri, Sep 19, priced at $421 found 5 days ago
Thu, Sep 18 - Fri, Sep 19
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$431 Roundtrip, found 5 days ago
$431
Roundtrip
found 5 days ago
Select United flight, departing Thu, Sep 18 from O'Hare Intl. to Macdonald-Cartier Intl., returning Fri, Sep 19, priced at $431 found 5 days ago
Thu, Sep 18 - Wed, Oct 8
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$432 Roundtrip, found 6 days ago
$432
Roundtrip
found 6 days ago
Select United flight, departing Thu, Sep 18 from O'Hare Intl. to Macdonald-Cartier Intl., returning Wed, Oct 8, priced at $432 found 6 days ago
Mon, Sep 22 - Thu, Sep 25
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$436 Roundtrip, found 2 days ago
$436
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 22 from O'Hare Intl. to Macdonald-Cartier Intl., returning Thu, Sep 25, priced at $436 found 2 days ago
Thu, Sep 18 - Wed, Oct 8
ORD
O'Hare Intl.
YOW
Macdonald-Cartier Intl.
$443 Roundtrip, found 6 days ago
$443
Roundtrip
found 6 days ago
Select United flight, departing Thu, Sep 18 from O'Hare Intl. to Macdonald-Cartier Intl., returning Wed, Oct 8, priced at $443 found 6 days ago

Frequently asked questions

What route does flight number UA3509 take?
UA3509 flies straight from Palm Beach Intl. Airport (PBI) to Washington Dulles Intl. Airport (IAD) in about 2 hours and 30 minutes. It can be used on other routes though, some of which could be multi-stop flights. Keep an eye out for this when locking in your airfare to avoid any confusion.
What kind of plane is on flight number UA3509?
UA3509 is a flight number that serves multiple routes. If you're booked on its most popular one, West Palm Beach, FL Airport (PBI-Palm Beach Intl.) to Washington Dulles Intl. Airport (IAD), you're likely to be hopping aboard the Embraer 170.
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 UA3509 flight with Travelocity, please visit our Customer Service Portal.