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Washington to Los Angeles DCA, IAD → LAX

Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) → Los Angeles International Airport (LAX)

The cheapest return found recently is $294 with Frontier Airlines, 20 Nov – 25 Nov, found yesterday. The cheapest one-way found recently is $189 with United Airlines, 29 Mar 2027, found yesterday.

Return

The cheapest return fare on each of 7 departure dates is usually $308 to $364.

Cheapest return found recently

$294

20 Nov – 25 Nov · Frontier Airlines

Ronald Reagan National Airport (DCA) → Los Angeles International Airport (LAX)

Leaves 7:00 a.m. · Return leaves 4:50 p.m. · 29 h 3 min of travel, both ways together

out 1 stop, back 1 stop

found yesterday

See prices for these datesCheck today's price

Cheapest nonstop return

$374

4 Mar 2027 – 7 Mar 2027 · United Airlines

Washington Dulles International Airport (IAD) → Los Angeles International Airport (LAX)

Leaves 7:51 p.m. · Return leaves 9:30 p.m. · 10 h 53 min of travel, both ways together

out nonstop, back nonstop

found yesterday

See prices for these datesCheck today's price

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Found recently, and the cheapest we hold

Cheapest found recently $294 20 Nov – 25 Novfound yesterdaySee prices for these dates

Cheapest we hold, of any age $273 14 Dec – 4 Jan 2027found 4 days agoSee prices for these dates

What have prices looked like?

Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $151 to $326.

$294, the cheapest return found recently, sits here in that range of $151 to $326.

25 days is a short history, so treat this range as an early guide.

Those were the prices on those days, not today's.

Is this a good return price?

Compared with the cheapest return fare on each of 7 departure dates from 31 Oct to 20 Mar 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.

Could nearby dates be cheaper?

We hold no other 5-night return fares leaving within 3 days of 20 Nov to compare.

Every date we hold

12 fares on 7 departure dates

31 Oct – 21 Nov: $352, found 3 days ago3 Nov – 10 Nov: $322, found 3 days ago20 Nov – 25 Nov: $294, found yesterday14 Dec – 4 Jan 2027: $273, found 4 days ago1 Jan 2027 – 10 Jan 2027: $353, found yesterday4 Mar 2027 – 7 Mar 2027: $374, found yesterday20 Mar 2027 – 30 Mar 2027: $503, found 4 days agoOctNovDecJanMar
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
31 Oct – 21 Nov$352Frontier AirlinesWashington Dulles International Airport (IAD) → Los Angeles International Airport (LAX)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
3 Nov – 10 Nov$322Frontier AirlinesWashington Dulles International Airport (IAD) → Los Angeles International Airport (LAX)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
20 Nov – 25 Nov$294Frontier AirlinesRonald Reagan National Airport (DCA) → Los Angeles International Airport (LAX)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
14 Dec – 4 Jan 2027$273Frontier AirlinesRonald Reagan National Airport (DCA) → Los Angeles International Airport (LAX)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
1 Jan 2027 – 10 Jan 2027$353American AirlinesRonald Reagan National Airport (DCA) → Los Angeles International Airport (LAX)out 1 stop, back 1 stopfound yesterdaySee prices for these dates
4 Mar 2027 – 7 Mar 2027$374United AirlinesWashington Dulles International Airport (IAD) → Los Angeles International Airport (LAX)out nonstop, back nonstopfound yesterdaySee prices for these dates
20 Mar 2027 – 30 Mar 2027$503American AirlinesWashington Dulles International Airport (IAD) → Los Angeles International Airport (LAX)out nonstop, back nonstopfound 4 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $273.

October 2026From $3521 departure date31 Oct – 21 Nov · found 3 days agoSee prices for these dates
November 2026From $2942 departure dates20 Nov – 25 Nov · found yesterdaySee prices for these dates
December 2026From $273Cheapest seen1 departure date14 Dec – 4 Jan 2027 · found 4 days agoSee prices for these dates
January 2027From $3531 departure date1 Jan 2027 – 10 Jan 2027 · found yesterdaySee prices for these dates
March 2027From $3742 departure dates4 Mar 2027 – 7 Mar 2027 · found yesterdaySee prices for these dates

Airlines on the cheapest dates: Frontier Airlines, American Airlines, United Airlines.

One-way

The cheapest one-way fare on each of 9 departure dates is usually $189 to $216.

Cheapest one-way found recently

$189

29 Mar 2027 · United Airlines

Washington Dulles International Airport (IAD) → Los Angeles International Airport (LAX)

Leaves 3:45 p.m. · 5 h 50 min trip

nonstop

found yesterday

Open this tripCheck today's price

Cheapest nonstop one-way

$189

29 Mar 2027 · United Airlines

Washington Dulles International Airport (IAD) → Los Angeles International Airport (LAX)

Leaves 3:45 p.m. · 5 h 50 min trip

nonstop

found yesterday

Open this tripCheck today's price

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Found recently, and the cheapest we hold

Cheapest found recently $189 29 Mar 2027found yesterdayOpen this trip

Cheapest we hold, of any age $110 4 Novfound 6 days agoOpen this trip

What have prices looked like?

Over 25 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $77 to $127.

At $189, the cheapest one-way found recently is above that range.

25 days is a short history, so treat this range as an early guide.

Those were the prices on those days, not today's.

Is this a good one-way price?

Compared with the cheapest one-way fare on each of 9 departure dates from 20 Oct to 29 Mar 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 29 Mar 2027 to compare.

Every date we hold

15 fares on 9 departure dates

20 Oct: $199, found yesterday4 Nov: $110, found 6 days ago30 Nov: $216, found 5 days ago22 Dec: $201, found 5 days ago23 Dec: $183, found 5 days ago26 Dec: $327, found 5 days ago27 Dec: $393, found 5 days ago29 Dec: $208, found 5 days ago29 Mar 2027: $189, found yesterdayOctNovDecMar
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
20 Oct$199Hawaiian AirlinesRonald Reagan National Airport (DCA) → Los Angeles International Airport (LAX)stops unknownfound yesterdayOpen this trip
4 Nov$110Frontier AirlinesRonald Reagan National Airport (DCA) → Los Angeles International Airport (LAX)1 stopfound 6 days agoOpen this trip
30 Nov$216Frontier AirlinesWashington Dulles International Airport (IAD) → Los Angeles International Airport (LAX)2 stopsfound 5 days agoOpen this trip
22 Dec$201Frontier AirlinesRonald Reagan National Airport (DCA) → Los Angeles International Airport (LAX)1 stopfound 5 days agoOpen this trip
23 Dec$183Frontier AirlinesWashington Dulles International Airport (IAD) → Los Angeles International Airport (LAX)1 stopfound 5 days agoOpen this trip
26 Dec$327Southwest AirlinesRonald Reagan National Airport (DCA) → Los Angeles International Airport (LAX)2 stopsfound 5 days agoOpen this trip
27 Dec$393Southwest AirlinesRonald Reagan National Airport (DCA) → Los Angeles International Airport (LAX)1 stopfound 5 days agoOpen this trip
29 Dec$208Frontier AirlinesWashington Dulles International Airport (IAD) → Los Angeles International Airport (LAX)1 stopfound 5 days agoOpen this trip
29 Mar 2027$189United AirlinesWashington Dulles International Airport (IAD) → Los Angeles International Airport (LAX)nonstopfound yesterdayOpen this trip

Which month looks cheapest?

November 2026 is the cheapest month — from $110.

October 2026From $1991 departure date20 Oct · found yesterdayOpen this trip
November 2026From $110Cheapest seen2 departure dates4 Nov · found 6 days agoOpen this trip
December 2026From $1835 departure dates23 Dec · found 5 days agoOpen this trip
March 2027From $1891 departure date29 Mar 2027 · found yesterdayOpen this trip

Airlines on the cheapest dates: Frontier Airlines, Southwest Airlines, Hawaiian Airlines, United Airlines.

Premium cabin fares from Washington to Los Angeles

We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.

Today's prices for 20 Nov – 25 Nov in another cabin: Premium economy · Business · First

Today's prices for 29 Mar 2027 in another cabin: Premium economy · Business · First

How far ahead were prices cheapest for Washington to Los Angeles?

Return

Fares 14 to 29 days before departure were typically 42% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

See these ranges as a table
Typical price in each booking range — round trip, per traveler in Economy.
Booked ahead byTypical fareCheapest dayAbove the cheapestDays of prices
0–6 days$447$379+73%10
7–13 days$376$270+46%11
14–29 days$259$151Cheapest seen24
30–59 days$273$259+6%8
60–89 days$464$273+79%16
90–179 days$377$332+46%20
180+ days$337$328+30%14

One-way

The cheapest fares were 14 to 29 days before departure.

From the cheapest one-way each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

See these ranges as a table
Typical price in each booking range — one way, per traveler in Economy.
Booked ahead byTypical fareCheapest dayAbove the cheapestDays of prices
14–29 days$107$83Cheapest seen18
30–59 days$119$77+11%21
60–89 days$146$114+36%18
90–179 days$181$111+69%22
180+ days$164$164+53%15

Could a nearby airport be cheaper?

A different airport at either end can change the fare — sometimes a lot.

Return

Baltimore → Los Angeles

57 km from Washington

$420

$126 more than flying from Washington

20 Nov – 25 Nov · BWI → LAX · out 1 stop, back 1 stop

found yesterday

See this route

Washington → Ontario

56 km from Los Angeles

$289

$5 less than flying to Los Angeles

3 Nov – 10 Nov · DCA → ONT · out 1 stop, back 1 stop

found 3 days ago

See this route

Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.

One-way

Washington → Ontario

56 km from Los Angeles

$237

$48 more than flying to Los Angeles

29 Dec · DCA → ONT · 1 stop

found 5 days ago

See this route

Baltimore → Los Angeles

57 km from Washington

$260

$71 more than flying from Washington

29 Mar 2027 · BWI → LAX · nonstop

found yesterday

See this route

Lancaster → Los Angeles

142 km from Washington

$260

$71 more than flying from Washington

23 Oct · LNS → LAX · 2 stops

found 6 days ago

Check today's price

Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.

Live price for these dates

The cheapest return found recently is for 20 Nov – 25 Nov. A live search on this page shows what those dates cost now, for one adult in economy.

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work