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$292+ Cheap flights from Riverside, CA to Lisbon (LIS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/14. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LIS
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheapflights Tip: The best prices from Riverside to Lisbon Humberto Delgado are usually found in November or February, booked 87 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

Cheap flight deals from Riverside to Lisbon

Cheapest flights from Riverside to Lisbon
Explore the most affordable flight options available from Riverside to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This British Airways deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:00 amLAX - LIS
1 stop15h 55mBritish Airways
Mon 1/126:35 pmLIS - LAX
1 stop26h 55mBritish Airways
Deal found 12/13$517
This Mytrip deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/147:10 pmLAX - LIS
1 stop35h 25mMultiple Airlines
Sun 12/212:10 pmLIS - LAX
1 stop33h 05mMultiple Airlines
Deal found 12/13$556
This FlightHub deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/145:30 pmLAX - LIS
1 stop22h 00mLufthansa
Mon 12/2211:55 amLIS - LAX
1 stop16h 49mLufthansa
Deal found 12/14$559
This United Airlines deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1410:20 amLAX - LIS
1 stop13h 50mUnited Airlines
Sun 12/2111:55 amLIS - LAX
1 stop21h 04mUnited Airlines
Deal found 12/13$560
This CheapOair deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/147:20 amLAX - LIS
1 stop16h 50mMultiple Airlines
Mon 12/223:25 pmLIS - LAX
2 stops35h 20mMultiple Airlines
Deal found 12/13$571
This Cheapflightsfares deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:30 pmLAX - LIS
1 stop22h 00mLufthansa
Mon 1/123:55 pmLIS - LAX
2 stops34h 50mLufthansa
Deal found 12/14$574
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:00 amLAX - LIS
2 stops19h 10mUnited Airlines
Mon 1/1210:15 amLIS - LAX
2 stops19h 29mUnited Airlines
Deal found 12/15$579
This oojo deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:00 pmLAX - LIS
1 stop28h 55mBritish Airways
Mon 1/126:35 pmLIS - LAX
1 stop31h 55mBritish Airways
Deal found 12/13$584
This Finnair deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:28 amLAX - LIS
1 stop13h 27mMultiple Airlines
Sun 1/1111:05 amLIS - LAX
1 stop18h 48mMultiple Airlines
Deal found 12/14$589

Find flight deals from Riverside to Lisbon

Keep the following information in mind while searching for Riverside to Lisbon flight deals. Data was last updated December 15, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$487
(United Airlines)

One-way from

$292
(Finnair)

Popular in

June

Cheapest in

November

Average price

$1,122
Provider with most accurate pricing for Los Angeles-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Lisbon Humberto Delgado flights.
Search Deals
From Riverside to Lisbon Humberto Delgado
Search Deals
One-way flight from Riverside to Lisbon Humberto Delgado
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($181 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Riverside to Lisbon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 15, 2025.
Use the filters below to find and compare flights from Riverside to Lisbon that are best for you.

Fly from

Riverside

Fly to

Lisbon

Route

Depart

Return

Price

Los AngelesLisbon

LAX - LIS

LAXLIS

Los Angeles

Fri 1/30

7:35 am-8:10 am

2 stops16h 35m

Lisbon Humberto Delgado

Mon 3/2

6:10 am-3:15 pm

1 stop17h 05m

$490

Los AngelesLisbon

LAX - LIS

LAXLIS

Los Angeles

Tue 2/3

3:25 pm-5:30 pm

1 stop18h 05m

Lisbon Humberto Delgado

Sun 3/1

5:30 am-6:35 pm

1 stop21h 05m

$492

Los AngelesLisbon

LAX - LIS

LAXLIS

Los Angeles

Sun 1/18

3:25 pm-3:10 pm

1 stop15h 45m

Lisbon Humberto Delgado

Sun 1/25

5:30 am-4:05 pm

1 stop18h 35m

$492

Los AngelesLisbon

LAX - LIS

LAXLIS

Los Angeles

Fri 3/6

5:00 am-8:10 am

2 stops19h 10m

Lisbon Humberto Delgado

Mon 3/30

6:15 am-5:45 pm

2 stops19h 30m

$500

Los AngelesLisbon

LAX - LIS

LAXLIS

Los Angeles

Tue 3/3

7:45 am-11:20 am

2 stops19h 35m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-9:31 pm

2 stops23h 31m

$501

Los AngelesLisbon

LAX - LIS

LAXLIS

Los Angeles

Tue 1/13

8:30 am-9:20 am

1 stop16h 50m

Lisbon Humberto Delgado

Sun 1/18

10:50 am-9:28 pm

1 stop18h 38m

$501

Los AngelesLisbon

LAX - LIS

LAXLIS

Los Angeles

Tue 1/13

7:45 am-11:20 am

2 stops19h 35m

Lisbon Humberto Delgado

Sun 1/18

5:00 am-4:05 pm

2 stops19h 05m

$501

Los AngelesLisbon

LAX - LIS

LAXLIS

Los Angeles

Wed 1/14

9:55 am-3:10 pm

2 stops21h 15m

Lisbon Humberto Delgado

Wed 1/21

5:00 am-6:45 pm

2 stops21h 45m

$501

Los AngelesLisbon

LAX - LIS

LAXLIS

Los Angeles

Thu 2/26

11:14 am-3:10 pm

2 stops19h 56m

Lisbon Humberto Delgado

Tue 3/3

5:00 am-6:35 pm

2 stops21h 35m

$501

Los AngelesLisbon

LAX - LIS

LAXLIS

Los Angeles

Wed 1/21

10:15 am-8:10 am

1 stop13h 55m

Lisbon Humberto Delgado

Sun 1/25

10:50 am-7:27 pm

1 stop16h 37m

$502

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 22 results
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Best time to book a flight from Riverside to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon from Riverside with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Riverside to Lisbon

How far ahead should I book a flight from Riverside to Lisbon?

Use this chart to determine the optimal time to book a round-trip flight from Riverside to Lisbon. Price data was last updated on December 12, 2025.

Booking 87 days in advance of your planned departure date is, on average, the best time to get cheap flights from Riverside to Lisbon. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Riverside to Lisbon?

Currently, January is the cheapest month in which you can book a flight from Riverside to Lisbon (average of $450). Flying from Riverside to Lisbon in June is currently the most expensive (average of $672). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from R1V to LIS?

Find hourly flight availability from Riverside to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

It’s typically best to fly out from Riverside to Lisbon in the evening. Doing so could potentially save you 40% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Riverside to Lisbon?

Use this chart to determine the cheapest time to fly round-trip from Riverside to Lisbon. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Riverside to Lisbon flight should consider departing on Friday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Riverside to Lisbon?

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Lisbon. Reviews last updated December 15, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and TAP AIR PORTUGAL from Riverside to Lisbon. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,010 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
7.9
Good
8,010 reviews
Delta
7.9
Good
8,010 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
9,094 reviews
Delta
7.9
Good
8,010 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
TAP AIR PORTUGAL
7.2
Good
2,090 reviews
Delta
7.9
Good
8,010 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.1
Good
10,527 reviews
Delta
7.9
Good
8,010 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.7
Okay
7,580 reviews
Delta
7.9
Good
8,010 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Riverside to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Lisbon from Riverside?

    Lisbon Humberto Delgado (LIS), located 4.2 mi from the city center, is the airport you fly into when you book flights from Riverside to Lisbon. 18 airlines have flights to Humberto Delgado from Riverside on a regular basis. Booking flights from Riverside to Lisbon Humberto Delgado should not be difficult; the airport handles an average of 0 inbound flights from Riverside per day.

  • How popular is this Riverside to Lisbon flight route?

    Within the past month, 56 users have taken a look at flights from Riverside to Lisbon Humberto Delgado.

  • How long is the flight from Riverside to Lisbon?

    United Airlines and Delta can get you from Riverside to Lisbon in just under 16h 35m. Your travel time can differ by up to 1h 30m. The distance between Riverside and Lisbon is about 5674 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Riverside to Lisbon one-way?

    One-way options have recently been found by users for as low as $225 on LEVEL. Other airlines that offer cheap prices include Iberia from $254 and TAP AIR PORTUGAL from $265 one-way.

  • What are the cheapest flights from Riverside to Lisbon?

    The cheapest flight price from Riverside to Lisbon is $226. On average you can expect to pay $1,556. The most popular route, (Los Angeles - Lisbon Humberto Delgado), can usually be booked for $428.

  • Can I find deals for flights from Riverside to Lisbon that include hotel bookings?

    Yes. In addition to deals on Riverside to Lisbon flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Riverside to Lisbon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Riverside to Lisbon.

  • Can I find deals for business class flights from Riverside to Lisbon?

    Yes. Cheapflights offers flight deals from Riverside to Lisbon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Riverside to Lisbon?

    Currently, January is the cheapest month in which you can book a flight from Riverside to Lisbon (average of $450). Flying from Riverside to Lisbon in June is currently the most expensive (average of $672). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Fátima
Oeiras
Ericeira
Costa da Caparica
Torres Vedras
Beja
Nazaré
Sesimbra
Colares

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Top 10 airlines flying from Riverside to Lisbon

Discover the top 10 airlines that operate flights from Riverside to Lisbon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$378Average$658FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$395Average$646FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$447Average$788FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$469Average$736FlexibilityNo cancel feeOn-time77%
IberiaCheapest$475Average$700FlexibilityNo cancel feeOn-time77%
DeltaCheapest$492Average$885FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$505Average$958FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$515Average$831FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$540Average$769FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$540Average$754FlexibilityNo cancel feeOn-time77%

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