Image disclosure: Images in this post are AI-generated and used for illustrative purposes only. They do not depict real people or events. See our full AI disclosure policy.
If your family loves science centers, natural history museums, and hands-on discovery museums, the ASTC Passport Program is one of the most underused membership perks in family travel. It works on the same principle as the AZA reciprocal zoo program: your membership at one participating science center gets you free admission at hundreds of others across North America and beyond. Here’s everything you need to know to use it well.
What Is the ASTC Passport Program?
The Association of Science and Technology Centers (ASTC) is the professional organization for science centers, natural history museums, and similar informal science learning institutions worldwide. The ASTC Passport Program allows members of participating institutions to receive free or reduced-price admission at other participating ASTC institutions — over 300 institutions in 40+ countries participate globally, with a large concentration in the United States and Canada.
The program covers a wide range of institutions: science centers, natural history museums, planetariums, technology museums, children’s discovery museums, botanical gardens, and similar hands-on learning venues.
The 90-Mile Rule: The Most Important Thing to Know
The ASTC Passport Program has one critical rule that catches people off guard: the 90-mile exclusion zone. You cannot use your Passport benefits at institutions within 90 miles of either (a) your home institution or (b) your primary residence.
This matters enormously for how you plan to use the program. If you live in a major metro area with multiple science museums, many of them may be off-limits under the 90-mile rule — even though they all participate in the Passport program. The benefit is specifically designed for travel beyond your local area, not for visiting multiple institutions in your own city.
The practical implication: the ASTC Passport is most valuable when you travel. A road trip, a family vacation, or a visit to a city more than 90 miles from your home — all great opportunities to use the benefit. Don’t count on using it at institutions near your neighborhood, even if they’re on the list.
Minimum Membership Requirements as of 2026
Starting in January 2026, ASTC updated the minimum membership levels required to qualify for Passport benefits. To receive reciprocal admission through the Passport program, your membership must meet these minimums:
- Individual membership: Minimum $40/year
- Group/family membership: Minimum $100/year (covers up to 2 adults and up to 4 children)
These minimums apply across all participating institutions. If your membership is below these thresholds, you won’t receive Passport benefits — you’ll need to upgrade your membership level. Check with your home institution to confirm your membership tier qualifies.
How to Pick the Right Home Institution
Since the benefit is primarily for travel, the right home institution is the one that gives you access to the institutions you’ll actually visit. Here’s how to think about it:
- Check the Passport participant list first: Visit astc.org/membership/astc-passport-program to see current participating institutions. Verify which institutions in the cities you visit are on the list.
- Look for a home institution with a good membership value on its own: You’ll be visiting this one regularly too, so pick a place your family loves, not just the cheapest option that clears the $100 threshold.
- Consider the Science Museum of Minnesota, California Academy of Sciences, Field Museum, or similar large institutions: These tend to offer generous Passport benefits to incoming members, though always verify current participation directly.
- Not all ASTC members participate in the Passport program: ASTC membership is separate from Passport participation. Verify a specific institution is enrolled in Passport before counting on reciprocal benefits there.
What the Passport Benefit Covers
At most participating institutions, the ASTC Passport covers free general admission for all members on your membership (typically 1–2 adults plus any children listed on the membership). Some institutions offer free admission; others offer a discount (most commonly 50% off).
What’s typically not covered:
- IMAX or dome theater shows
- Special or ticketed exhibitions
- Planetarium shows at some institutions
- Rides and simulators
- Programs or classes that require a separate registration
Before Every Visit: Check and Call Ahead
The Passport participant list is updated periodically, and individual institutions can suspend or modify their reciprocal offering. Before any trip where you’re counting on Passport benefits:
- Verify the institution is on the current participant list at astc.org
- Confirm they currently honor your specific home institution’s membership (not just ASTC membership generally)
- Ask about any exclusion dates or special event blackout periods
- Confirm what’s included in the benefit (free admission vs. discount)
Most institutions will tell you all of this on their website’s membership page, but a quick email or phone call before your trip saves a lot of disappointment at the door.
The Math: When Is a Science Center Membership Worth It?
A family membership at a science center typically runs $100–$175 per year. A single family admission to a major science center often runs $60–$100. If your family visits your home institution twice (covering the membership cost) and uses reciprocal access at two science centers while traveling, you’ve saved significantly compared to paying general admission at each stop. For families who travel even occasionally and love this kind of learning environment, the math works out well.
The sweet spot is if you’re already planning trips to cities with major ASTC-participating institutions. Look at the list when you’re planning travel — if a science center is in a city you’re already visiting for another reason, free admission is essentially free money.
Also see our guides: AZA Reciprocal Admissions (zoos and aquariums) and America the Beautiful Pass (national parks) — together these three programs can dramatically cut the cost of educational family travel throughout the year.
? Heads up
ASTC Passport participation, the 90-mile rule, minimum membership thresholds, and individual institution policies can change. Always verify current program details at astc.org and confirm directly with the institution you plan to visit. Full disclaimer ?
