United Flight 3509 Deals & Information (2025/2026)

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United Flight 3509 Route Deals From $152

The cheapest prices found with in the last 7 days for return flights were $241 and $152 for one-way flights to Bangor Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 26 - Thu, Aug 28
ORD
O'Hare Intl.
BGR
Bangor Intl.
$241 Roundtrip, found 5 days ago
$241
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 26 from O'Hare Intl. to Bangor Intl., returning Thu, Aug 28, priced at $241 found 5 days ago
Tue, Aug 26 - Thu, Aug 28
ORD
O'Hare Intl.
BGR
Bangor Intl.
$248 Roundtrip, found 5 days ago
$248
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 26 from O'Hare Intl. to Bangor Intl., returning Thu, Aug 28, priced at $248 found 5 days ago
Tue, Aug 26 - Thu, Aug 28
ORD
O'Hare Intl.
BGR
Bangor Intl.
$259 Roundtrip, found 5 days ago
$259
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 26 from O'Hare Intl. to Bangor Intl., returning Thu, Aug 28, priced at $259 found 5 days ago
Tue, Aug 26 - Thu, Aug 28
ORD
O'Hare Intl.
BGR
Bangor Intl.
$273 Roundtrip, found 5 days ago
$273
Roundtrip
found 5 days ago
Select United flight, departing Tue, Aug 26 from O'Hare Intl. to Bangor Intl., returning Thu, Aug 28, priced at $273 found 5 days ago
Fri, Sep 5 - Tue, Sep 9
ORD
O'Hare Intl.
BGR
Bangor Intl.
$274 Roundtrip, found 3 days ago
$274
Roundtrip
found 3 days ago
Select United flight, departing Fri, Sep 5 from O'Hare Intl. to Bangor Intl., returning Tue, Sep 9, priced at $274 found 3 days ago
Sat, Oct 11 - Wed, Oct 15
ORD
O'Hare Intl.
BGR
Bangor Intl.
$281 Roundtrip, found 2 days ago
$281
Roundtrip
found 2 days ago
Select United flight, departing Sat, Oct 11 from O'Hare Intl. to Bangor Intl., returning Wed, Oct 15, priced at $281 found 2 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.