United Flight AC3431 Deals & Information (2025/2026)

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United Flight 3431 Route Deals From $106

The cheapest prices found with in the last 7 days for return flights were $235 and $106 for one-way flights to Pearson Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Sep 17 - Sat, Sep 20
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$235 Roundtrip, found 4 hours ago
$235
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Sep 17 from Washington Dulles Intl. to Pearson Intl., returning Sat, Sep 20, priced at $235 found 4 hours ago
Mon, Sep 29 - Tue, Sep 30
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$259 Roundtrip, found 2 days ago
$259
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 29 from Washington Dulles Intl. to Pearson Intl., returning Tue, Sep 30, priced at $259 found 2 days ago
Wed, Sep 17 - Sat, Sep 20
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$262 Roundtrip, found 4 hours ago
$262
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Sep 17 from Washington Dulles Intl. to Pearson Intl., returning Sat, Sep 20, priced at $262 found 4 hours ago
Thu, Sep 4 - Fri, Sep 12
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$280 Roundtrip, found 2 days ago
$280
Roundtrip
found 2 days ago
Select United flight, departing Thu, Sep 4 from Washington Dulles Intl. to Pearson Intl., returning Fri, Sep 12, priced at $280 found 2 days ago
Mon, Sep 29 - Tue, Sep 30
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$281 Roundtrip, found 2 days ago
$281
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 29 from Washington Dulles Intl. to Pearson Intl., returning Tue, Sep 30, priced at $281 found 2 days ago
Thu, Sep 4 - Fri, Sep 12
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$284 Roundtrip, found 2 days ago
$284
Roundtrip
found 2 days ago
Select United flight, departing Thu, Sep 4 from Washington Dulles Intl. to Pearson Intl., returning Fri, Sep 12, priced at $284 found 2 days ago
Wed, Sep 17 - Sat, Sep 20
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$290 Roundtrip, found 4 hours ago
$290
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Sep 17 from Washington Dulles Intl. to Pearson Intl., returning Sat, Sep 20, priced at $290 found 4 hours ago
Wed, Sep 17 - Sat, Sep 20
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$301 Roundtrip, found 4 hours ago
$301
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Sep 17 from Washington Dulles Intl. to Pearson Intl., returning Sat, Sep 20, priced at $301 found 4 hours ago
Wed, Sep 17 - Sat, Sep 20
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$306 Roundtrip, found 4 hours ago
$306
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Sep 17 from Washington Dulles Intl. to Pearson Intl., returning Sat, Sep 20, priced at $306 found 4 hours ago
Wed, Sep 17 - Sat, Sep 20
IAD
Washington Dulles Intl.
YYZ
Pearson Intl.
$311 Roundtrip, found 4 hours ago
$311
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Sep 17 from Washington Dulles Intl. to Pearson Intl., returning Sat, Sep 20, priced at $311 found 4 hours ago

Frequently asked questions

What route does flight number UA3431 take?
UA3431 flies directly between Liberty Intl. Airport (EWR) and Nashville International Airport in approximately 2 hours and 29 minutes. It can be used on other routes though, some of which could be multi-stop trips. Keep an eye out for this when locking in your airfare to avoid any confusion.
What terminal does UA3431 fly out of?
You'll likely leave from Terminal C if you're booked on a flight out of Liberty Intl. Airport (EWR). UA3431 serves a number of routes, but the direct flight between EWR and Nashville Intl. Airport (BNA) is the most popular one.
What kind of plane is on flight number UA3431?
It's more than likely you'll be boarding the Embraer 175 if you've booked a fare on flight UA3431 from Newark Airport to BNA. This is the most commonly used type of plane on this popular route.
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 UA3431 flight with Travelocity, please visit our Customer Service Portal.