United Flight AC3456 Deals & Information (2025/2026)

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United Flight 3456 Route Deals From $129

The cheapest prices found with in the last 7 days for return flights were $203 and $129 for one-way flights to Newark Liberty Intl. Airport for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Oct 12 - Tue, Oct 14
YUL
Pierre Elliott Trudeau Intl.
EWR
Newark Liberty Intl. Airport
$203 Roundtrip, found 2 days ago
$203
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 12 from Pierre Elliott Trudeau Intl. to Newark Liberty Intl. Airport, returning Tue, Oct 14, priced at $203 found 2 days ago
Wed, Jul 16 - Thu, Jul 17
YUL
Pierre Elliott Trudeau Intl.
EWR
Newark Liberty Intl. Airport
$209 Roundtrip, found 6 days ago
$209
Roundtrip
found 6 days ago
Select United flight, departing Wed, Jul 16 from Pierre Elliott Trudeau Intl. to Newark Liberty Intl. Airport, returning Thu, Jul 17, priced at $209 found 6 days ago
Wed, Jul 16 - Thu, Jul 17
YUL
Pierre Elliott Trudeau Intl.
EWR
Newark Liberty Intl. Airport
$226 Roundtrip, found 6 days ago
$226
Roundtrip
found 6 days ago
Select United flight, departing Wed, Jul 16 from Pierre Elliott Trudeau Intl. to Newark Liberty Intl. Airport, returning Thu, Jul 17, priced at $226 found 6 days ago
Wed, Jul 9 - Fri, Jul 11
YUL
Pierre Elliott Trudeau Intl.
EWR
Newark Liberty Intl. Airport
$233 Roundtrip, found 2 days ago
$233
Roundtrip
found 2 days ago
Select United flight, departing Wed, Jul 9 from Pierre Elliott Trudeau Intl. to Newark Liberty Intl. Airport, returning Fri, Jul 11, priced at $233 found 2 days ago
Sun, Oct 12 - Tue, Oct 14
YUL
Pierre Elliott Trudeau Intl.
EWR
Newark Liberty Intl. Airport
$244 Roundtrip, found 2 days ago
$244
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 12 from Pierre Elliott Trudeau Intl. to Newark Liberty Intl. Airport, returning Tue, Oct 14, priced at $244 found 2 days ago

Frequently asked questions

What route does flight number UA3456 take?
UA3456 is used on a range of routes. Mostly, UA3456 flies straight from Washington Dulles Intl. Airport (IAD) to MYR. If that's your flight path, you'll be flying for about 1 hour and 29 minutes.
What kind of plane is on flight number UA3456?
It's likely you'll be taking off on an Embraer 175 if you've booked a seat from IAD to Myrtle Beach Intl. Airport (MYR), one of a few routes used for flight UA3456.
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 UA3456 flight with Travelocity, please visit our Customer Service Portal.