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United Flight 400 Deals & Information

Trip Type
Flight 1
Flight 2
Flight 3
Flight 4
Flight 5
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United Flight 400 Route Deals From $119

The cheapest prices found with in the last 7 days for return flights were $239 and $119 for one-way flights to Los Angeles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Dec 10 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$119

One way

just found

Open IAD to LAX flights search result page
Sat, Nov 21 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$121

One way

found 2 hours ago

Open IAD to LAX flights search result page
Wed, Nov 25 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$127

One way

found 18 hours ago

Open IAD to LAX flights search result page
Tue, Nov 24 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$141

One way

found 4 days ago

Open IAD to LAX flights search result page
Sat, Nov 21 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$151

One way

found 2 hours ago

Open IAD to LAX flights search result page
Sat, Nov 21 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$153

One way

found 2 hours ago

Open IAD to LAX flights search result page
Tue, Dec 1 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$161

One way

found 22 hours ago

Open IAD to LAX flights search result page
Sun, Jan 3 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$178

One way

found 1 day ago

Open IAD to LAX flights search result page
Sat, Nov 21 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$185

One way

found 2 hours ago

Open IAD to LAX flights search result page
Tue, Sep 29 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$196

One way

found 1 hour ago

Open IAD to LAX flights search result page
Thu, Nov 19 - Thu, Dec 3
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$239

Roundtrip

found 21 hours ago

Open IAD to LAX flights search result page
Thu, Dec 10 - Tue, Dec 15
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$241

Roundtrip

just found

Open IAD to LAX flights search result page
Thu, Dec 10 - Tue, Dec 15
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$246

Roundtrip

just found

Open IAD to LAX flights search result page
Mon, Dec 28 - Thu, Dec 31
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$248

Roundtrip

found 4 hours ago

Open IAD to LAX flights search result page
Fri, Nov 20 - Tue, Nov 24
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$249

Roundtrip

just found

Open IAD to LAX flights search result page
Fri, Nov 20 - Tue, Nov 24
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$251

Roundtrip

just found

Open IAD to LAX flights search result page
Fri, Nov 20 - Tue, Nov 24
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$253

Roundtrip

just found

Open IAD to LAX flights search result page
Wed, Oct 21 - Wed, Oct 28
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$255

Roundtrip

found 1 day ago

Open IAD to LAX flights search result page
Thu, Oct 15 - Mon, Oct 19
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$257

Roundtrip

found 3 hours ago

Open IAD to LAX flights search result page
Tue, Sep 29 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$196

One way

found 1 hour ago

Open IAD to LAX flights search result page
Wed, Oct 21 - Wed, Oct 28
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$255

Roundtrip

found 1 day ago

Open IAD to LAX flights search result page
Thu, Oct 15 - Mon, Oct 19
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$257

Roundtrip

found 3 hours ago

Open IAD to LAX flights search result page
Sat, Nov 21 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$121

One way

found 2 hours ago

Open IAD to LAX flights search result page
Wed, Nov 25 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$127

One way

found 18 hours ago

Open IAD to LAX flights search result page
Tue, Nov 24 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$141

One way

found 4 days ago

Open IAD to LAX flights search result page
Sat, Nov 21 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$151

One way

found 2 hours ago

Open IAD to LAX flights search result page
Sat, Nov 21 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$153

One way

found 2 hours ago

Open IAD to LAX flights search result page
Sat, Nov 21 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$185

One way

found 2 hours ago

Open IAD to LAX flights search result page
Thu, Nov 19 - Thu, Dec 3
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$239

Roundtrip

found 21 hours ago

Open IAD to LAX flights search result page
Fri, Nov 20 - Tue, Nov 24
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$249

Roundtrip

just found

Open IAD to LAX flights search result page
Fri, Nov 20 - Tue, Nov 24
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$251

Roundtrip

just found

Open IAD to LAX flights search result page
Fri, Nov 20 - Tue, Nov 24
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$253

Roundtrip

just found

Open IAD to LAX flights search result page
Thu, Dec 10 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$119

One way

just found

Open IAD to LAX flights search result page
Tue, Dec 1 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$161

One way

found 22 hours ago

Open IAD to LAX flights search result page
Thu, Dec 10 - Tue, Dec 15
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$241

Roundtrip

just found

Open IAD to LAX flights search result page
Thu, Dec 10 - Tue, Dec 15
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$246

Roundtrip

just found

Open IAD to LAX flights search result page
Mon, Dec 28 - Thu, Dec 31
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$248

Roundtrip

found 4 hours ago

Open IAD to LAX flights search result page
Sun, Jan 3 -
IAD
Washington Dulles Intl.
to
LAX
Los Angeles Intl.
$178

One way

found 1 day ago

Open IAD to LAX flights search result page

More United Flight For This Route

Carrier Flight Depart IAD Arrive LAX Tue
9/29		 Wed
9/30		 Thu
10/1		 Fri
10/2		 Sat
10/3		 Sun
10/4		 Mon
10/5		 Stops
UA 400 10:30 am 01:00 pm Check fare Check fare - - - - - 0 stop(s)
UA 719 06:05 pm 08:22 pm Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)
UA 632 10:30 am 01:00 pm - - Check fare Check fare Check fare Check fare Check fare 0 stop(s)

FAQs about UA400

What route does flight number UA400 take?

UA400 flies straight from San Antonio, TX (SAT-San Antonio Intl.) to Washington, DC (IAD-Washington Dulles Intl.) in about 3 hours and 19 minutes. It can be used on other routes though, some of which may be multi-stop trips. Keep an eye out for this when booking your seat to avoid any confusion.

How often is UA400 on time?

If you're taking to the skies on United Airlines flight number UA400 from Washington, DC (IAD-Washington Dulles Intl.) to Raleigh, NC (RDU-Raleigh - Durham Intl.), leave some buffer room in your travel plans — these flights arrive on time 76% of the time. If it happens to be delayed, you can expect to wait roughly 20 minutes. This is the most popular route for your flight, and it has a 2.5-star rating.

What kind of plane is on flight number UA400?

UA400 is a flight number that serves many different routes. If you're traveling on the most popular route, Washington, DC (IAD-Washington Dulles Intl.) to Raleigh, NC (RDU-Raleigh - Durham Intl.), there's every chance you'll be hopping aboard the Airbus A319.