$821 Cheap Flights from Lisbon (LIS) to Monrovia (ROB)

View $821 flight on Thu, Sep 25, 2025Opens in a new window

Popular airlines from Humberto Delgado Airport (LIS) to Monrovia (ROB-Roberts Intl.)

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Cheap Flights from Lisbon to Monrovia (LIS-ROB)

Prices were available within the past 7 days and start at $821 for one-way flights and $1,475 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Sun, Sep 21 - Fri, Sep 26
LIS
Lisbon
ROB
Monrovia
$1,475 Roundtrip, found 2 days ago
$1,475
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Sun, Sep 21 from Lisbon to Monrovia, returning Fri, Sep 26, priced at $1,475 found 2 days ago
Swiss International Air Lines
Sun, Sep 21 - Fri, Sep 26
LIS
Lisbon
ROB
Monrovia
$1,496 Roundtrip, found 2 days ago
$1,496
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Sun, Sep 21 from Lisbon to Monrovia, returning Fri, Sep 26, priced at $1,496 found 2 days ago
Swiss International Air Lines
Sun, Sep 21 - Fri, Sep 26
LIS
Lisbon
ROB
Monrovia
$1,497 Roundtrip, found 2 days ago
$1,497
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Sun, Sep 21 from Lisbon to Monrovia, returning Fri, Sep 26, priced at $1,497 found 2 days ago
TAP Portugal
Sun, Sep 21 - Fri, Sep 26
LIS
Lisbon
ROB
Monrovia
$1,498 Roundtrip, found 2 days ago
$1,498
Roundtrip
found 2 days ago
Select TAP Portugal flight, departing Sun, Sep 21 from Lisbon to Monrovia, returning Fri, Sep 26, priced at $1,498 found 2 days ago
Swiss International Air Lines
Sun, Sep 21 - Fri, Sep 26
LIS
Lisbon
ROB
Monrovia
$1,511 Roundtrip, found 2 days ago
$1,511
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Sun, Sep 21 from Lisbon to Monrovia, returning Fri, Sep 26, priced at $1,511 found 2 days ago
Swiss International Air Lines
Sun, Sep 21 - Fri, Sep 26
LIS
Lisbon
ROB
Monrovia
$1,518 Roundtrip, found 2 days ago
$1,518
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Sun, Sep 21 from Lisbon to Monrovia, returning Fri, Sep 26, priced at $1,518 found 2 days ago
TAP Portugal
Sun, Sep 21 - Fri, Sep 26
LIS
Lisbon
ROB
Monrovia
$1,520 Roundtrip, found 2 days ago
$1,520
Roundtrip
found 2 days ago
Select TAP Portugal flight, departing Sun, Sep 21 from Lisbon to Monrovia, returning Fri, Sep 26, priced at $1,520 found 2 days ago
Swiss International Air Lines
Sun, Sep 21 - Fri, Sep 26
LIS
Lisbon
ROB
Monrovia
$1,531 Roundtrip, found 2 days ago
$1,531
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Sun, Sep 21 from Lisbon to Monrovia, returning Fri, Sep 26, priced at $1,531 found 2 days ago
TAP Portugal
Sun, Sep 21 - Fri, Sep 26
LIS
Lisbon
ROB
Monrovia
$1,534 Roundtrip, found 2 days ago
$1,534
Roundtrip
found 2 days ago
Select TAP Portugal flight, departing Sun, Sep 21 from Lisbon to Monrovia, returning Fri, Sep 26, priced at $1,534 found 2 days ago
Brussels Airlines
Sun, Sep 21 - Fri, Sep 26
LIS
Lisbon
ROB
Monrovia
$1,953 Roundtrip, found 2 days ago
$1,953
Roundtrip
found 2 days ago
Select Brussels Airlines flight, departing Sun, Sep 21 from Lisbon to Monrovia, returning Fri, Sep 26, priced at $1,953 found 2 days ago
Flights from Lisbon (LIS) to Monrovia (ROB)
Origin airport
Humberto Delgado
Destination airport
Roberts Intl.
Roundtrip price
$1,475
Distance
2248 mi

Lisbon to Monrovia Flights

The cheapest times to fly from Lisbon to Monrovia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Lisbon to Monrovia are during the month of September. You can find some of the cheapest flights from Lisbon to Monrovia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Lisbon to Monrovia

Sunday is one of the best days to book for cheap flights from Lisbon to Monrovia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Lisbon to Monrovia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Lisbon to Monrovia in 2025. You can also book with separate airlines for your outbound and return journeys, from $821 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Lisbon to Monrovia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Lisbon to Monrovia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Humberto Delgado Airport (LIS) to Roberts Intl. Airport (ROB) cost?
Lock in a cheap one-way flight from $821 or cheap return flight from $1,475 from Humberto Delgado Airport (LIS) to Roberts Intl. Airport (ROB) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Humberto Delgado Airport (LIS) to Roberts Intl. Airport (ROB)?
September is the least expensive month to fly from LIS to ROB. Traveling outside of peak seasons is often the key to finding better deals on flights.
What is the cheapest airline that flies from Humberto Delgado Airport (LIS) to Roberts Intl. Airport (ROB)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from LIS to ROB. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Humberto Delgado Airport (LIS) to Roberts Intl. Airport (ROB)?
You'll need to hop on a flight with a layover if you're traveling from Humberto Delgado Airport (LIS) to Roberts Intl. Airport (ROB). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from LIS to ROB?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Humberto Delgado Airport (LIS) to Roberts Intl. Airport (ROB)?
To avoid potential delays on the Humberto Delgado Airport (LIS) to Roberts Intl. Airport (ROB) route, fly before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Humberto Delgado Airport (LIS) to Roberts Intl. Airport (ROB) last-minute?
Holding off until just before your departure to book your flight from LIS to ROB generally means paying more. While you may come across some last-minute offers, they're not always guaranteed. Allow some flexibility in your schedule to maximize your chances of snagging a bargain.
Is it cheaper to book a LIS to ROB flight and hotel package?
Securing a LIS to ROB flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our wide range of accommodations and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Humberto Delgado Airport (LIS) to Roberts Intl. Airport (ROB)?
If you booked your LIS to ROB flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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*Available to One Key members.