United Flight UA3643 Deals & Information (2025/2026)

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United Flight 3643 Route Deals From $69

The cheapest prices found with in the last 7 days for return flights were $137 and $69 for one-way flights to Raleigh - Durham Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 23 - Wed, Oct 1
IAD
Washington Dulles Intl.
RDU
Raleigh - Durham Intl.
$137 Roundtrip, found 2 hours ago
$137
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Sep 23 from Washington Dulles Intl. to Raleigh - Durham Intl., returning Wed, Oct 1, priced at $137 found 2 hours ago
Mon, Aug 25 - Tue, Aug 26
IAD
Washington Dulles Intl.
RDU
Raleigh - Durham Intl.
$162 Roundtrip, found 5 days ago
$162
Roundtrip
found 5 days ago
Select United flight, departing Mon, Aug 25 from Washington Dulles Intl. to Raleigh - Durham Intl., returning Tue, Aug 26, priced at $162 found 5 days ago
Tue, Sep 23 - Wed, Oct 1
IAD
Washington Dulles Intl.
RDU
Raleigh - Durham Intl.
$168 Roundtrip, found 2 hours ago
$168
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Sep 23 from Washington Dulles Intl. to Raleigh - Durham Intl., returning Wed, Oct 1, priced at $168 found 2 hours ago
Thu, Jan 15 - Mon, Jan 19
IAD
Washington Dulles Intl.
RDU
Raleigh - Durham Intl.
$179 Roundtrip, found 3 days ago
$179
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jan 15 from Washington Dulles Intl. to Raleigh - Durham Intl., returning Mon, Jan 19, priced at $179 found 3 days ago
Tue, Jul 15 - Fri, Jul 18
IAD
Washington Dulles Intl.
RDU
Raleigh - Durham Intl.
$180 Roundtrip, found 4 hours ago
$180
Roundtrip
found 4 hours ago
Select United flight, departing Tue, Jul 15 from Washington Dulles Intl. to Raleigh - Durham Intl., returning Fri, Jul 18, priced at $180 found 4 hours ago
Mon, Aug 25 - Tue, Aug 26
IAD
Washington Dulles Intl.
RDU
Raleigh - Durham Intl.
$190 Roundtrip, found 5 days ago
$190
Roundtrip
found 5 days ago
Select United flight, departing Mon, Aug 25 from Washington Dulles Intl. to Raleigh - Durham Intl., returning Tue, Aug 26, priced at $190 found 5 days ago
Tue, Jul 15 - Fri, Jul 18
IAD
Washington Dulles Intl.
RDU
Raleigh - Durham Intl.
$198 Roundtrip, found 4 hours ago
$198
Roundtrip
found 4 hours ago
Select United flight, departing Tue, Jul 15 from Washington Dulles Intl. to Raleigh - Durham Intl., returning Fri, Jul 18, priced at $198 found 4 hours ago
Mon, Jul 21 - Fri, Jul 25
IAD
Washington Dulles Intl.
RDU
Raleigh - Durham Intl.
$210 Roundtrip, found 3 days ago
$210
Roundtrip
found 3 days ago
Select United flight, departing Mon, Jul 21 from Washington Dulles Intl. to Raleigh - Durham Intl., returning Fri, Jul 25, priced at $210 found 3 days ago
Mon, Aug 25 - Tue, Aug 26
IAD
Washington Dulles Intl.
RDU
Raleigh - Durham Intl.
$220 Roundtrip, found 5 days ago
$220
Roundtrip
found 5 days ago
Select United flight, departing Mon, Aug 25 from Washington Dulles Intl. to Raleigh - Durham Intl., returning Tue, Aug 26, priced at $220 found 5 days ago
Mon, Aug 25 - Tue, Aug 26
IAD
Washington Dulles Intl.
RDU
Raleigh - Durham Intl.
$222 Roundtrip, found 5 days ago
$222
Roundtrip
found 5 days ago
Select United flight, departing Mon, Aug 25 from Washington Dulles Intl. to Raleigh - Durham Intl., returning Tue, Aug 26, priced at $222 found 5 days ago

Frequently asked questions

What route does flight number UA3643 take?
UA3643 takes numerous routes. The most popular is Myrtle Beach Intl. Airport to Dulles Intl. Airport, which is a direct flight. This flight generally takes 1 hour and 25 minutes. That said, you might find other flights with this number that have one or more stops.
What kind of plane is on flight number UA3643?
It's likely you'll be taking off on the Embraer 175 if you're flying from Myrtle Beach Intl. Airport to Washington Dulles Intl. Airport (IAD), one route used for flight UA3643.
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 UA3643 flight with Travelocity, please visit our Customer Service Portal.