Best Roundtrip Vacation Packages & Travel Deals

United Airlines via ShermansTravel discounts select United Airlines International Roundtrip Fares with prices starting from $301.51. (On the ShermansTravel landing page, click on "United.com" in the top line to see this sale.) That's the lowest price we could find for select routes on comparable airlines by at least $82. This price is valid on flights from Newark, NY, (EWR) with arrival in Reykjavik, Iceland (KEF) on September 30 and return on October 4. Book this travel deal by August 31.

Prices, dates, and booking details were valid at the time of publication.

Cruise.com via ShermansCruise offers a Disney Cruise Line 6-Night Caribbean Cruise for two with prices starting from $1,570. (On the ShermansCruise landing page, scroll to the bottom and click "Book Now" next to the November 24 sailing date; we found lower rates during booking.) That's the lowest price we could find for this cruise by $370. This roundtrip cruise aboard the Disney Magic departs from New York, NY, on November 24. Book this travel deal by October 31.

As seen on Travelzoo, Gate 1 Travel offers a Central Thailand 11-Night Flight and Hotel Escorted Vacation for Two with prices starting from $2,598 via coupon code "TZWCTH". That's the lowest price we could find for such a package by $620. Book this travel deal by August 31 for vacations from August 28 through May 17, 2019. Highlights include:

• Roundtrip international airfare
• hotel stays in Bangkok, Ayutthaya, Sukhothai, Chiang Rai, and Chiang Mai
• 18 meals, including daily breakfast
• sightseeing tours per itinerary

Cruise.com via ShermansCruise offers a Carnival Cruises 4-Night Mexico Cruise for Two with prices starting from $408. (On the ShermansCruise landing page, scroll down and click "Book Now" next to the December 2 sailing date.) That's the lowest price we could find for such a cruise by $10. This roundtrip cruise aboard the Carnival Imagination departs Long Beach, CA, on December 2. Additional fees may apply. Book this travel deal by August 31.

Cruise.com via ShermansCruise offers a Royal Caribbean 5-Night Cozumel Cruise for Two, with prices starting from $492. (On the ShermansCruise landing page, scroll to the bottom and click "Book Now" next to the September 17 sailing date.) That's the best deal we could find for such a cruise next month by $46. This roundtrip cruise aboard the Majesty of the Seas departs from Tampa, FL, on September 17. Additional fees and taxes may apply. Book this travel deal by August 31.

Avoya via ShermansCruise offers a Carnival Cruise 5-Night West Caribbean Cruise for two, with prices starting at $518. (It's the first offer on the landing page.) That's the lowest price we could find by $20. This roundtrip cruise aboard the Carnival Fantasy departs from Mobile, AL, on January 20, 2019. Book this travel deal by August 31.

Hainan Air via DealBase discounts select Hainan Air Roundtrip Flights to China from select cities in the U.S., with prices starting from $446.59. (On the DealBase landing page, click on "Hainan Air" in the top line to see this sale; on Hainan's sale page, you may have to click "Search Flights" under "Plan & Book" in the top banner to search for flights.) That's $18 under our mention from last week and the lowest price we could find for select routes now by at least $37. This price is valid on flights departing on November 8 from Seattle, WA, (SEA), with arrival in Shanghai, China, (PVG) and return on November 12. Book this travel deal by September 30 for travel through June 30, 2019.

All prices, dates, and booking details were valid at the time of publication.

Cruise.com via ShermansCruise offers a Carnival Cruises 5-Night Caribbean Cruise for Two with prices from $748. (On the landing page, scroll down and click "Book Now" next to the December 2 sailing date.) That's the lowest price we could find for such a cruise in December by $180. This roundtrip cruise aboard the Carnival Conquest departs from Ft. Lauderdale, FL, on December 2. Additional fees may apply. Book this travel deal by August 31.

Cruise.com via ShermansCruise offers a Carnival Cruise 4-Night Mexico Cruise for Two, with prices starting from $378. (On the ShermansCruise landing page, scroll down and click "Book Now" next to the September 10 sailing date.) That's $50 under our mention from two weeks ago and the lowest price we could find for such a cruise now by $40. This roundtrip cruise aboard the Carnival Victory departs from Miami, FL, on September 10. Book this travel deal by August 31.

Cruise.com via ShermansCruise offers a Carnival Cruise 5-Night Bahamas Cruise for Two with prices starting at $548. (On the landing page, scroll down and click "Book Now" next to the November 10 sailing date.) That's the lowest price we could find by $40. This roundtrip cruise aboard the Carnival Sensation departs from Miami, FL, on November 10. Book this travel deal by August 31.

TripMasters offers a Costa Rica Flight and Hotel Vacation for Two with prices starting at $1,663.70, as seen on Travelzoo. That's the lowest price we could find for similar vacations by $394. This price is based on departure on October 26 from Houston, TX, (IAH) with arrival in San Jose, Costa Rica (SJO); other departure cities are available for an additional cost. Book this travel deal by August 27. Highlights include:

• Roundtrip international airfare
• 3-night hotel stays near Arenal Volcano and the Guanacaste beaches
• airport transfers and transport between cities
• daily breakfast

Princess Cruises via ShermansTravel offers a Princess Cruises 7-Night Eastern Caribbean Cruise for Two with prices starting from $1,078. That's the lowest price we could find for such a cruise by $120. This roundtrip cruise aboard the Regal Princess departs from Fort Lauderdale, FL, on January 12, 2019. Additional fees may apply. Book this travel deal by September 10.

Indus Travel via ShermansTravel offers an 7-Night India Flight, Hotel, and Escorted Tour Vacation for two with prices starting from $2,199 via coupon code "BOGO50". That's $819 under the best price we could find for a comparable India vacation elsewhere. Book this travel deal by August 31 for travel from January 14, 2019, through March 25, 2019. Highlights include:

• Roundtrip international airfare
• hotel stays in Jaipur, Agra, Dholpur, and Delhi
• daily breakfast
• tour of the Taj Mahal and Ambar Fort

Indus Travel via Dunhill Travel offers an Romantic Thailand 6-Night Flight and Hotel Vacation for Two with prices starting from $3,598. That'sthe lowest price we could find by $400. Additional fees may apply. Book this travel deal by August 31 for travel on select dates from November 28 through April 24, 2019. Highlights include:

• Roundtrip international airfare
• hotel stays in Bangkok and Koh Samui
• daily breakfast
• regional airfare to Koh Samui