Heading out for the holidays? 5 money-saving travel tricks many people miss

From skipping an ATM's currency conversion to rechecking your hotel rate, some of the best travel savings come after the trip is already booked

• Always pick the local currency: Letting a foreign ATM or card terminal convert your purchase to U.S. dollars can raise the cost by about 3% to 12%.

• Book first, then keep searching: If your hotel reservation is refundable, you may be able to cancel and rebook when the same room drops in price.

• Some deals come with a deadline: Certain travel insurance benefits must be purchased within 14 to 21 days of your first trip payment.

You may have already booked the lower-cost holiday flight, compared hotel rates, and even packed snacks to avoid airport markups.

Still, some of the easiest ways to save on travel can happen after you reserve everything.

Personal finance company Achieve recently shared several lesser-known travel-saving ideas with ConsumerAffairs. We reviewed the research behind them and found five that are worth knowing before you set off for the holidays.

1. Keep checking hotel prices after you reserve

Most travelers compare hotel prices until they click “reserve,” then stop looking.

If your booking allows free cancellation, there is a better tactic.

Reserve the room, set a reminder, and check the same hotel again a week or two later. If the rate has dropped, make a new reservation at the lower price and then cancel the original one. Just be sure the new booking is confirmed before you cancel the old one.

Recent academic research covering more than two million reservations across hundreds of properties tested this cancel-and-rebook approach and found that many hotel rooms became cheaper before check-in.

That does not mean you will always save a large amount, since prices can also rise.

But because hotel rates move around a lot, booking a refundable rate gives you the option to benefit if prices fall later.

It helps to set two reminders when you book:

Reminder #1: Check again two weeks later.

Reminder #2: Check a few days before the free-cancellation deadline.

Just make sure you are comparing the same room type, dates, taxes, resort fees, and cancellation terms.

2. College dorms can be a budget hotel alternative

You do not have to be a student to stay in a dorm. During breaks, some colleges and universities rent unused student housing to travelers.

UniversityRooms, a booking platform focused on this niche, lists accommodations at hundreds of colleges and universities worldwide.

These rooms are unlikely to feel like a luxury hotel. Expect simple dorm-style lodging, possibly a shared bathroom, and fairly basic amenities, but the price can be very appealing.

This option makes the most sense in expensive cities when you mainly need a clean, well-located place to sleep rather than a full resort experience.

Before booking, compare the all-in cost with nearby hotels, hostels, and short-term rentals. Also check whether the bathroom is private or shared, whether linens are included, and how far the campus is from the places you want to visit.

It is also important to pay attention to the academic calendar. These rooms are generally available when students are away, especially during summer and holiday breaks.

Pro tip: Many U.S. colleges do not heavily promote dorm rooms on major travel sites. Search the university name along with “visitor housing” or “guest accommodations” to see what is available.

3. Use cash for the trip's little temptations

Here is an experiment worth trying on your next trip.

At the start of the day, withdraw the amount of cash you are comfortable spending on extras like coffee, snacks, drinks, and souvenirs.

When it is gone, you are done.

There is research behind this idea.

A 2024 analysis reviewed 71 studies involving more than 11,000 participants and over 338,000 transactions. Researchers found a small but statistically significant “cashless effect,” meaning people tend to spend more when they pay without cash.

That does not mean cash will magically cut vacation spending by 10%, but it can help psychologically.

When you tap your phone several times for gelato, coffee, souvenirs, and a couple of drinks, each purchase can feel minor. But if you start with $80 in your wallet and see only $17 left by mid-afternoon, the spending feels more real.

In other words, cash turns “I’ll try not to overspend today” into a specific limit and makes money leaks easier to notice.

4. At a foreign ATM, avoid choosing U.S. dollars

This may be the simplest travel-saving tip on the list. When you use a credit card or ATM overseas, the machine may ask whether you want the transaction processed in U.S. dollars rather than local currency.

Choose the local currency.

The dollar option is known as dynamic currency conversion, or DCC. It means the machine handles the exchange for you at its own rate instead of letting your bank or card network do it. That convenience can cost more.

Testing cited by the European Consumer Organisation found that consumers paid 2.6% to 12% more when they chose their home currency. Separate research on 1,500 ATM withdrawals found that people who accepted the conversion lost money 99.7% of the time, with an average markup of 7.6%.

How to use this on your next trip: If the terminal asks “USD or EUR?” and you are in France, choose EUR. In Mexico, choose pesos. In Japan, choose yen.

Look out for wording such as “accept conversion” or “decline conversion.” Declining the ATM conversion does not cancel the withdrawal; it usually means you are refusing its exchange rate.

One caveat: your bank or credit card may still charge its own foreign transaction or ATM fees, so check those before you travel.

5. Buy travel insurance earlier than you might expect

Here is one that can matter more than saving a small amount on a hotel.

If you are considering travel insurance and have a pre-existing medical condition, do not assume you can wait until just before departure to buy it.

Some policies waive the pre-existing-condition exclusion only if coverage is bought within a relatively short period after your first trip deposit or payment.

Depending on the policy, that window is usually around 14 to 21 days. Allianz, for example, says certain plans must be purchased within 14 days of the first nonrefundable trip payment or deposit. Other policies have different deadlines, so it is important to check.

The practical step: On the day you make your first nonrefundable trip payment, begin the travel-insurance process right away rather than waiting until the week before departure.

And do not just ask, “Does this policy cover pre-existing conditions?” Instead, ask: “Does it include a pre-existing-condition exclusion waiver? What is the deadline? What do I need to qualify?”

In the end, you already did the hard part by finding a cheaper flight. Do not let an ATM, a hotel rate, or a few quick taps on your phone take those savings back.