United Flight UA4240 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 4240 Route Deals From $224

The cheapest prices found with in the last 7 days for return flights were $209 and $224 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Oct 6 - Sun, Oct 12
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$209 Roundtrip, found 8 hours ago
$209
Roundtrip
found 8 hours ago
Select United flight, departing Mon, Oct 6 from Huntsville Intl. to Washington Dulles Intl., returning Sun, Oct 12, priced at $209 found 8 hours ago
Sat, Sep 27 - Mon, Sep 29
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$213 Roundtrip, found 2 days ago
$213
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 27 from Huntsville Intl. to Washington Dulles Intl., returning Mon, Sep 29, priced at $213 found 2 days ago
Fri, Sep 26 - Mon, Sep 29
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$219 Roundtrip, found 1 day ago
$219
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 26 from Huntsville Intl. to Washington Dulles Intl., returning Mon, Sep 29, priced at $219 found 1 day ago
Sat, Sep 27 - Mon, Sep 29
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$221 Roundtrip, found 2 days ago
$221
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 27 from Huntsville Intl. to Washington Dulles Intl., returning Mon, Sep 29, priced at $221 found 2 days ago
Sat, Oct 11 - Tue, Oct 14
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$221 Roundtrip, found 5 days ago
$221
Roundtrip
found 5 days ago
Select United flight, departing Sat, Oct 11 from Huntsville Intl. to Washington Dulles Intl., returning Tue, Oct 14, priced at $221 found 5 days ago
Thu, Sep 18 - Wed, Sep 24
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$224 Roundtrip, found 6 days ago
$224
Roundtrip
found 6 days ago
Select United flight, departing Thu, Sep 18 from Huntsville Intl. to Washington Dulles Intl., returning Wed, Sep 24, priced at $224 found 6 days ago
Thu, Oct 9 - Mon, Oct 13
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$233 Roundtrip, found 1 day ago
$233
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 9 from Huntsville Intl. to Washington Dulles Intl., returning Mon, Oct 13, priced at $233 found 1 day ago
Thu, Oct 2 - Sun, Oct 5
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$237 Roundtrip, found 5 days ago
$237
Roundtrip
found 5 days ago
Select United flight, departing Thu, Oct 2 from Huntsville Intl. to Washington Dulles Intl., returning Sun, Oct 5, priced at $237 found 5 days ago
Thu, Sep 18 - Wed, Sep 24
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$239 Roundtrip, found 6 days ago
$239
Roundtrip
found 6 days ago
Select United flight, departing Thu, Sep 18 from Huntsville Intl. to Washington Dulles Intl., returning Wed, Sep 24, priced at $239 found 6 days ago
Mon, Oct 6 - Sun, Oct 12
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$249 Roundtrip, found 8 hours ago
$249
Roundtrip
found 8 hours ago
Select United flight, departing Mon, Oct 6 from Huntsville Intl. to Washington Dulles Intl., returning Sun, Oct 12, priced at $249 found 8 hours ago