United Flight AS2403 Deals & Information (2025/2026)

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United Flight 2403 Route Deals From $101

The cheapest prices found with in the last 7 days for return flights were $197 and $101 for one-way flights to Seattle - Tacoma Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 17 - Fri, Oct 24
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$197 Roundtrip, found 11 hours ago
$197
Roundtrip
found 11 hours ago
Select United flight, departing Fri, Oct 17 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Fri, Oct 24, priced at $197 found 11 hours ago
Wed, Sep 10 - Tue, Sep 23
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$200 Roundtrip, found 5 days ago
$200
Roundtrip
found 5 days ago
Select United flight, departing Wed, Sep 10 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $200 found 5 days ago
Fri, Nov 7 - Sun, Nov 9
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$200 Roundtrip, found 1 hour ago
$200
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Nov 7 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Sun, Nov 9, priced at $200 found 1 hour ago
Fri, Nov 7 - Sun, Nov 9
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$201 Roundtrip, found 1 hour ago
$201
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Nov 7 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Sun, Nov 9, priced at $201 found 1 hour ago
Thu, Oct 16 - Thu, Oct 23
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$209 Roundtrip, found 1 day ago
$209
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 16 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Thu, Oct 23, priced at $209 found 1 day ago
Wed, Nov 5 - Tue, Nov 11
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$210 Roundtrip, found 1 hour ago
$210
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Nov 5 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Tue, Nov 11, priced at $210 found 1 hour ago
Fri, Nov 7 - Sun, Nov 9
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$215 Roundtrip, found 1 hour ago
$215
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Nov 7 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Sun, Nov 9, priced at $215 found 1 hour ago
Tue, Oct 21 - Mon, Oct 27
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$225 Roundtrip, found 21 hours ago
$225
Roundtrip
found 21 hours ago
Select United flight, departing Tue, Oct 21 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Mon, Oct 27, priced at $225 found 21 hours ago
Wed, Oct 1 - Mon, Oct 6
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$230 Roundtrip, found 11 hours ago
$230
Roundtrip
found 11 hours ago
Select United flight, departing Wed, Oct 1 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Mon, Oct 6, priced at $230 found 11 hours ago
Wed, Nov 5 - Tue, Nov 11
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$235 Roundtrip, found 1 hour ago
$235
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Nov 5 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Tue, Nov 11, priced at $235 found 1 hour ago
Wed, Sep 10 - Tue, Sep 23
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$235 Roundtrip, found 5 days ago
$235
Roundtrip
found 5 days ago
Select United flight, departing Wed, Sep 10 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Tue, Sep 23, priced at $235 found 5 days ago
Tue, Oct 21 - Mon, Oct 27
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$239 Roundtrip, found 21 hours ago
$239
Roundtrip
found 21 hours ago
Select United flight, departing Tue, Oct 21 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Mon, Oct 27, priced at $239 found 21 hours ago
Tue, Oct 21 - Mon, Oct 27
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$243 Roundtrip, found 21 hours ago
$243
Roundtrip
found 21 hours ago
Select United flight, departing Tue, Oct 21 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Mon, Oct 27, priced at $243 found 21 hours ago
Fri, Oct 17 - Fri, Oct 24
EWR
Newark Liberty Intl. Airport
SEA
Seattle - Tacoma Intl.
$244 Roundtrip, found 11 hours ago
$244
Roundtrip
found 11 hours ago
Select United flight, departing Fri, Oct 17 from Newark Liberty Intl. Airport to Seattle - Tacoma Intl., returning Fri, Oct 24, priced at $244 found 11 hours ago

Frequently asked questions

What route does flight number UA2403 take?
UA2403 takes multiple routes. The most popular is between EWR and Orlando Intl. Airport (MCO), which flies direct. This service takes about 2 hours and 45 minutes. That said, there may be other flights with this number that have one or more stops.
What terminal does UA2403 fly out of?
UA2403 flights out of Liberty Intl. Airport (EWR) typically leave from Terminal C. This flight number runs on a number of routes, but the most popular one is Liberty Intl. Airport (EWR) to Orlando Intl. Airport (MCO).
What kind of plane is on flight number UA2403?
It's likely you'll be heading off on the Boeing 737-900 if you've booked a ticket from EWR to Orlando, FL Airport (MCO-Orlando Intl.), one of several routes used for flight UA2403.
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 UA2403 flight with Travelocity, please visit our Customer Service Portal.