$390 Cheap Flights from Ithaca (ITH) to Lisbon (LIS)

View $390 flight on Wed, Jul 22, 2026Opens in a new window

Popular airlines from Ithaca, NY (ITH-Tompkins Regional) to Humberto Delgado Airport (LIS)

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Cheap Flights from Ithaca to Lisbon (ITH-LIS)

Prices were available within the past 7 days and start at $390 for one-way flights and $716 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Apr 28 - Sat, May 9
ITH
Ithaca
LIS
Lisbon
$716 Roundtrip, found 5 days ago
$716
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Apr 28 from Ithaca to Lisbon, returning Sat, May 9, priced at $716 found 5 days ago
Delta
Tue, Apr 28 - Sun, May 10
ITH
Ithaca
LIS
Lisbon
$716 Roundtrip, found 5 days ago
$716
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Apr 28 from Ithaca to Lisbon, returning Sun, May 10, priced at $716 found 5 days ago
Delta
Sun, Apr 12 - Wed, Apr 29
ITH
Ithaca
LIS
Lisbon
$759 Roundtrip, found 5 days ago
$759
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Apr 12 from Ithaca to Lisbon, returning Wed, Apr 29, priced at $759 found 5 days ago
Delta
Sun, Apr 12 - Fri, May 1
ITH
Ithaca
LIS
Lisbon
$759 Roundtrip, found 5 days ago
$759
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Apr 12 from Ithaca to Lisbon, returning Fri, May 1, priced at $759 found 5 days ago
Delta
Tue, Apr 14 - Wed, Apr 29
ITH
Ithaca
LIS
Lisbon
$763 Roundtrip, found 5 days ago
$763
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Apr 14 from Ithaca to Lisbon, returning Wed, Apr 29, priced at $763 found 5 days ago
Delta
Tue, Apr 14 - Fri, May 1
ITH
Ithaca
LIS
Lisbon
$763 Roundtrip, found 5 days ago
$763
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Apr 14 from Ithaca to Lisbon, returning Fri, May 1, priced at $763 found 5 days ago
Delta
Sun, Apr 12 - Tue, Apr 28
ITH
Ithaca
LIS
Lisbon
$766 Roundtrip, found 5 days ago
$766
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Apr 12 from Ithaca to Lisbon, returning Tue, Apr 28, priced at $766 found 5 days ago
KLM
Mon, May 4 - Sun, May 10
ITH
Ithaca
LIS
Lisbon
$772 Roundtrip, found 2 days ago
$772
Roundtrip
found 2 days ago
Select KLM flight, departing Mon, May 4 from Ithaca to Lisbon, returning Sun, May 10, priced at $772 found 2 days ago
United
Tue, Apr 14 - Tue, Apr 21
ITH
Ithaca
LIS
Lisbon
$777 Roundtrip, found 4 days ago
$777
Roundtrip
found 4 days ago
Select United flight, departing Tue, Apr 14 from Ithaca to Lisbon, returning Tue, Apr 21, priced at $777 found 4 days ago
Air France
Tue, Sep 29 - Wed, Oct 7
ITH
Ithaca
LIS
Lisbon
$1,040 Roundtrip, found 2 days ago
$1,040
Roundtrip
found 2 days ago
Select Air France flight, departing Tue, Sep 29 from Ithaca to Lisbon, returning Wed, Oct 7, priced at $1,040 found 2 days ago

Alternative airports near Lisbon

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Humberto Delgado LIS. Cheapest option available. Flights from $795
LIS
Humberto Delgado
Cheapest
Flights from $795

Frequently asked questions

How much does a flight from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado) cost?
You can find cheap one-way flights from $390 and cheap return flights from $716 Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado) with Expedia. Return flights often range between $1679 and $5235. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado)?
The cheapest month to fly from ITH to LIS is April when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado)?
Enter ITH to LIS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado)?
KLM is one of the cheapest airlines offering connecting flights from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado), with round-trip tickets starting from around $1,896 with a layover in John F. Kennedy Intl. (JFK). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado)?
To find a cheap flight from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado)?
The earliest flight from Tompkins Regional Airport (ITH) to Humberto Delgado Airport (LIS) typically departs at around 5:35 AM. This seasonal service operates in May, giving you a chance to start your adventure in Lisbon early. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado)?
The busiest day for flights from Tompkins Regional (ITH) to Humberto Delgado (LIS) is a Thursday, with around 4 flights. This gives you plenty of options for your travel plans. Major airlines on this route include United and Delta.
What are the most popular departure times for flights from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado)?
The most popular departure times for flights from Tompkins Regional (ITH) to Humberto Delgado (LIS) are in the early morning, from 6am to 9am. About 57% of passengers prefer this time window. Many major carriers, including United Airlines and Delta Airlines, offer flights during this window. This timing works well because it allows you to arrive in Lisbon with plenty of time to explore the city.
How long does it take to fly from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado)?
A flight from ITH to LIS with a layover takes around 21 hours 30 minutes, with the route covering approximately 3,445 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado)?
Select the "Business class" and "First class" filters when looking for ITH to LIS flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado) flight with Expedia?
It's easy to earn miles on a Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Lisbon from Tompkins Regional (ITH)?
If you're planning to travel to Lisbon from Tompkins Regional (ITH), you can fly into Humberto Delgado (LIS) Some flights may connect through major hubs like Washington Dulles Intl. (IAD), John F. Kennedy Intl. (JFK) before reaching Lisbon. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado) at the last minute?
Typically, booking a last minute flight from Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado) flight and hotel package?
Securing a Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado) Lisbon Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays 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 Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado)?
If you booked your Ithaca, NY (ITH-Tompkins Regional) to Lisbon (LIS-Humberto Delgado) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Tompkins Regional
Destination airport
Humberto Delgado
Airlines serving
Air France, Delta, KLM, United
Roundtrip price
$715
Distance
3445 mi

Book with confidence

Ithaca to Lisbon Flights

The cheapest times to fly from Ithaca to Lisbon

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 Ithaca to Lisbon are during the month of April. You can find some of the cheapest flights from Ithaca to Lisbon with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ithaca to Lisbon

Sunday is one of the best days to book for cheap flights from Ithaca to Lisbon: 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 Ithaca to Lisbon

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 Ithaca to Lisbon in 2026. You can also book with separate airlines for your outbound and return journeys, from $390 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 Ithaca to Lisbon 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 Ithaca to Lisbon 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.

 

Ithaca to Lisbon Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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