United Flight UA4309 Deals & Information (2025/2026)

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United Flight 4309 Route Deals From $204

The cheapest prices found with in the last 7 days for return flights were $179 and $204 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Sep 5 - Thu, Sep 11
PHL
Philadelphia Intl.
IAD
Washington Dulles Intl.
$179 Roundtrip, found 4 days ago
$179
Roundtrip
found 4 days ago
Select United flight, departing Fri, Sep 5 from Philadelphia Intl. to Washington Dulles Intl., returning Thu, Sep 11, priced at $179 found 4 days ago
Thu, Oct 23 - Sat, Oct 25
PHL
Philadelphia Intl.
IAD
Washington Dulles Intl.
$189 Roundtrip, found 4 days ago
$189
Roundtrip
found 4 days ago
Select United flight, departing Thu, Oct 23 from Philadelphia Intl. to Washington Dulles Intl., returning Sat, Oct 25, priced at $189 found 4 days ago
Fri, Jul 4 - Mon, Jul 7
PHL
Philadelphia Intl.
IAD
Washington Dulles Intl.
$193 Roundtrip, found 1 day ago
$193
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jul 4 from Philadelphia Intl. to Washington Dulles Intl., returning Mon, Jul 7, priced at $193 found 1 day ago
Fri, Sep 5 - Thu, Sep 11
PHL
Philadelphia Intl.
IAD
Washington Dulles Intl.
$216 Roundtrip, found 4 days ago
$216
Roundtrip
found 4 days ago
Select United flight, departing Fri, Sep 5 from Philadelphia Intl. to Washington Dulles Intl., returning Thu, Sep 11, priced at $216 found 4 days ago
Fri, Jul 4 - Mon, Jul 7
PHL
Philadelphia Intl.
IAD
Washington Dulles Intl.
$227 Roundtrip, found 1 day ago
$227
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jul 4 from Philadelphia Intl. to Washington Dulles Intl., returning Mon, Jul 7, priced at $227 found 1 day ago
Fri, Sep 5 - Thu, Sep 11
PHL
Philadelphia Intl.
IAD
Washington Dulles Intl.
$239 Roundtrip, found 4 days ago
$239
Roundtrip
found 4 days ago
Select United flight, departing Fri, Sep 5 from Philadelphia Intl. to Washington Dulles Intl., returning Thu, Sep 11, priced at $239 found 4 days ago
Thu, Oct 23 - Sat, Oct 25
PHL
Philadelphia Intl.
IAD
Washington Dulles Intl.
$249 Roundtrip, found 4 days ago
$249
Roundtrip
found 4 days ago
Select United flight, departing Thu, Oct 23 from Philadelphia Intl. to Washington Dulles Intl., returning Sat, Oct 25, priced at $249 found 4 days ago
Fri, Jul 4 - Mon, Jul 7
PHL
Philadelphia Intl.
IAD
Washington Dulles Intl.
$255 Roundtrip, found 1 day ago
$255
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jul 4 from Philadelphia Intl. to Washington Dulles Intl., returning Mon, Jul 7, priced at $255 found 1 day ago
Mon, Jun 30 - Mon, Jul 7
PHL
Philadelphia Intl.
IAD
Washington Dulles Intl.
$270 Roundtrip, found 4 days ago
$270
Roundtrip
found 4 days ago
Select United flight, departing Mon, Jun 30 from Philadelphia Intl. to Washington Dulles Intl., returning Mon, Jul 7, priced at $270 found 4 days ago
Fri, Jul 4 - Mon, Jul 7
PHL
Philadelphia Intl.
IAD
Washington Dulles Intl.
$274 Roundtrip, found 1 day ago
$274
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jul 4 from Philadelphia Intl. to Washington Dulles Intl., returning Mon, Jul 7, priced at $274 found 1 day ago

Frequently asked questions

What route does flight number UA4309 take?
UA4309 serves multiple routes, but the most common is between Huntsville Intl. Airport (HSV) and Houston, TX Airport (IAH-George Bush Intercontinental). If you're lucky enough to score a direct flight, you'll stroll through arrivals in roughly 2 hours. Multi-stop flights can also use this number, as can services on other routes.
What kind of plane is on flight number UA4309?
It's likely you'll be on the Embraer ERJ if you're going from Huntsville, AL Airport (HSV-Huntsville Intl.) to Houston Airport, a popular route for flight UA4309.
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 UA4309 flight with Travelocity, please visit our Customer Service Portal.